# Questions Asked onOctober 27, 2010

1. ## Chemistry

3) The following set of data was obtained by the method of initial rates for the reaction: 2 HgCl2(aq) + C2O42-(aq) 􀀏 2 Cl-(aq) + 2 CO2(g) + Hg2Cl2(s) What is the rate law for the reaction? [HgCl2], M [C2O42-], M Rate, M/s 0.10 0.10 1.3 × 10-7 0.10

2. ## College Chemistry

A Galvanic cell consists of Mg electrode in a 1.0 mol L -1 Mg(NO3)2 solution and a Ag electrode in a 1.0 mol L-1 AgNO3 solution. Calculate standard emf for the spontaneous reaction of this electrochemical cell at 25 C, given that the standard reduction

How many 1/6s are in 1? How many 1/6s are in 1/2 ?

4. ## chemistry

Four identical 1.0-L flasks contain the gases He, Cl2, CH4, and NH3, each at 0°C and 1 atm pressure. Which gas sample has the greatest number of molecules?

5. ## college

It takes 51.0 j to raise the temperature of an 8.60 g piece of unknown metal from 13.0 C to 25.0 C. What is the specific heat for the metal?

6. ## Physics

The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 20 m radius of curvature. What is the car's speed at the bottom of the dip?

7. ## calculus problem

the thin lens equation in physics is 1/s+1/S=1/f where s is the object distance from the lens,S is the image distance from the lens,and f is the focal length of the lens.Suppose that a certain lens has a focal length of 6cm and that an object is moving

8. ## Chemistry

Consider the following reaction: 2 SO2 (g) + O2 (g)----> 2 SO3 (g) If 285.3 mL of SO2 is allowed to react with 158.9 mL of O2 (both measured at 315 K and 50.0 mmHg), what is the limiting reactant and theoretical yield of SO3 in moles? If 187.2 mL of SO3 is

9. ## physics

An ant walks on a piece of graph paper straight along the x axis a distance of 10.0 cm in 2.20 s. It then turns left 30.0 degrees and walks in a straight line another 10.0 cm in 1.90 s. Finally, it turns another 70.0 degrees to the left and walks another

10. ## College Chemistry

For the reaction SO3(g)---> SO2(g) + 1/2 O2(g), Kc= 16.7 at 1000 K. What is the value of Kc at 1000 K for the reaction 2 SO2 (g) + O2(g)---> 2 SO3(g)?

3X+4Y

12. ## science

Instructions: Read the following paragraph carefully. Then use what you know about momentum, work, and energy to answer the following questions. Be sure to show your work. You are a traffic accident investigator. You have arrived at the scene of an

13. ## Math

What is the place value of the number? 14.(5)805 ^

14. ## math

How does a Hawaiian Baritone laugh?

15. ## Chemistry

HCl(aq) + NaOH(aq) -> NaCl(aq) + H2O(l) NH4Cl(aq) + +NaOH(aq) -> NH3(aq) + NaCl(aq) + H2O(l) NH3(aq) + HCl(aq) -> NH4Cl(aq) Write net ionic equations for the three reactions. Show how the first two reactions are arranged algebraically to determine the

16. ## PHYSICS ---HELP!

Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a

17. ## math/algebra

3x+4y=5 6x+8y=10

18. ## Physics- Work related

If 2.0 J of work is done in raising 180 g apple how far is it lifted? I would assume that 2/180 = x but I divided it and it does not sound right.. please someone help.

19. ## chemistry

Data: SO2(g)+ 1/2O2(gas)forms SO3(g)Delta H = -99.1 kJ. Given the above data, calculate the enthalpy change when 89.6 g of SO2 is converted to SO3. Is this a grams to moles conversion or what? I can't find any examples of this type of calculation.

20. ## Math Pizzaz worksheet 9.3

What happens when the King of Beasts runs in front of a train? I cant figure out the riddle. I need help! :)

21. ## art/101

· Examine the sculptures of Donatello’s David (Early Renaissance), Michelangelo’s David (High Renaissance), and Bernini’s David (Baroque). · Write a 300- to 350-word comparison of the different styles of the David sculptures by these three artists.

22. ## physics 111

A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.600 m. What impulse was given to the ball by the floor? answer in kg·m/s

23. ## Physics

A child bounces a 46 g superball on the side-walk. The velocity change of the superball isfrom 28 m/s downward to 16 m/s upward.If the contact time with the sidewalk is1800s, what is the magnitude of the average forceexerted on the superball by the

24. ## Psychology

What is an advantage and disadvantage of the Incentive Motivational Theory in Psych?

25. ## management 330

1. How do strategic, operational, and tactical planning differ? How might the three levels complement one another in an organization? 2. Define corporate social responsibility. What are the arguments for and against the concept of corporate social

26. ## english

what is the comparative and superlative form of independent

27. ## math111

Suppose the graph of f is a parabola with vertex at (2,1). Suppose g(x) = 3 x + 2. a) What are the coordinates of the vertex of the graph of g(composed)f? b) What are the coordinates of the vertex of the graph of f(composed)g?

28. ## Organic Chemistry

In the substitution reaction of 2-pentanol with sulfuric acid and sodium bromide, how many grams of sodium bromide and mL of sulfuric acid would be required if we use 3.5 grams of 2-pentanol?

29. ## Physics

A helicopter has two blades (see figure), each of which has a mass of 220 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 45 rad/s. (a) What is the total moment of inertia of the two blades about the

The total cross-sectional area of the load-bearing calcified portion of the two forearm bones (radius and ulna) is approximately 2.5 cm2. During a car crash, the forearm is slammed against the dashboard. The arm comes to rest from an initial speed of 80

How to draw a Lewis dot structure....

32. ## Chemistry

Uranium hexafluoride is a solid at room temperature, but it boils at 56°C. Determine the density of uranium hexafluoride at 76°C at 747 torr.

33. ## psychology

How has early memory research concerning the growth of cognitive perspectives in psychology changed over the course of the 20th century?

34. ## Calculus Help

Determine the point at which the graph of the function has a horizontal tangent line. f(x) = (9x^2)/(x^2+6)

35. ## Chemistry

If the pressure on a 1.04 L sample of gas is doubled at the constant temperature, what will be the new volume of the gas?

36. ## biology

In both lecture and lab, the significance of water (H2O), molecular oxygen (O2), and carbon dioxide (CO2) has been emphasized with regard to their energy content or participation in metabolic oxidation and reduction reactions. This lab has demonstrated

37. ## College Biology

A 21-year old brother of a person with insulin-dependent diabetes mellitus experienced increased urination and thirst for 6 weeks, along with a 15 pound weight losss, despitre a normal appetite. Fearing that these symptoms meant he also had developed

38. ## physics

A 4111.0 kg truck is parked on a 14.6° slope. What is the friction force on the truck?

39. ## Chemistry

1. Calculate the number of moles of carbon atoms present in 2.4g of ethanol (C2H6O). 2. What is the % Nitrogen by weight in 3.696 mol of ammonium sulfide. 3. How many atoms of mercury are present in 5.4 cubic cm of liquid mercury? The density of mercury is

40. ## Physics - Charges at an angle (check + help)

Three charged objects are located t the vertices of a right triangle. Charge A (5*10^-6) has Cartesian coordinates (0,4; Charge B (-5.0*10^-6) is at the origin; charge c (+4.0*10^-6) has coordinates (5,0), where the coordinates are in meters. What is the

41. ## college algebra

Use the theorem on bounds to establish the best integral bounds for the roots of the equation w^(4)-8w^(3)+2w^(2)+10w-1=0

42. ## Chemistry

Cu (I): CN- Pb2+: CN-, SO3^2-, PO3^3-,MnO4- Ca2+: CN- Al3+: CN-, SO3^2-, PO3^3-,MnO4- Cr5+: CN-, SO3^2-, PO3^3-,MnO4- Pb4+: CN- Sn2+: CN- Mn2+:MnO4- Ag+:CN-, SO3^2-, PO3^3- H+: CN-, SO3^2-, PO3^3-,MnO4-

43. ## physics

How long would it take for the Earth to complete a full turn if a person at 49.2° northern geographical latitude floats apparently weightlessly across the room? Use REarth = 6,385 km for the radius of Earth

44. ## chem

Give the general formula for any cyclic alkene; that is, a cyclic hydrocarbon with one double bond. (Type your answer using the format CnHn+1 for CnHn+1.) thanks:)

45. ## perfect competition

If all the assumptions of perfect competition hold, why would firms in such an industry have little incentive to carry out technological change or much research and development? What condition would encourage research and development in competitive

46. ## calculus

Find parametric equations for the line through the point P(2, 9, 4) that is parallel to the plane x + y + z = 6 and perpendicular to the line x = 5 + t , y = 5 − t , z = 5t . Answer Choices: 1. x = 2 + 6t, y = 9 + 4t, z = 4 + t 2. x = 2 + t, y = a + t, z

47. ## Accounting

How could you apply the concepts of Readability, Reusability, and Reliability

48. ## chemistry

Ethylene glycol (antifreeze) has a specific heat of 2.42 J/(g*K). Calculate q when 3.65 kg of ethylene glycol cools from 240 degrees C to 78 C

49. ## physics

A 82-kg astronaut and a 1300-kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.24 m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with

50. ## algebra

what does x equal in this equation?1/2+7x/10=13/20

51. ## Chemistry

22. Arrhenius defined an acid as hydrogen containing and able to form hydrogen ions in water.- T? 23. A strong acid does not have to be a strong electrolyte.- F? 31. Bases generate (OH) ions.- T 32. A neutralization reaction forms water from hydronium and

52. ## Chemistry

I need help starting this problem: A piece of dry ice (solid carbon dioxide) with a mass of 4.50 g is sealed inside a 2.0 L bottle, and allowed to sublime. At 22.0 degrees Celsius, what is the partial pressure of the CO2 in the bottle? (Assume that all of

53. ## algebra

I need help with this problem. (7-x)(9-2x) This is the answer I came up with. Please let me know if I'm right. x^2-23*x+63

54. ## Chemistry

A 1.00-kg sample of Sb2S3(s) and a 10.0-g sample of H2(g) are allowed to react in a 25.0-L container at 713 K. At equilibrium, 72.6 g H2S(g) is present. What is the value of Kp at 713 K for this reaction? Sb2S3(s) + 3 H2(g) 2Sb(s) + 3 H2S(g)

55. ## math

How do turn 80dm into centimeters

56. ## MATH

In a triangle ABC, angle B is three times angle A and angle C is 1 less than 6 times angle A. Find the size of angle A, B, C

57. ## chemistry

A 2.85-g sample containing only MgO and CuO is placed in a 3.00-L container. The container is filled with CO2 to a pressure of 740. torr at 20. degree C. After the reaction has gone to completion, the pressure inside the flask is 390. torr at 20. degree C.

58. ## math

A book is 1 3/4 inches thick. There are 8 copies of the same book stacked in a bookstore. How tall is the stack in inches?

I have to find the function rule that goes with this table... X Y 2 8 4 18 7 33 9 43 12 57 I've been trying to figure it out for an hour and can't find anything that works for all of them.

60. ## Biology

Oxidized (blue) DPIP becomes colorless when it is reduced – that is, when it receives electrons. A diagram of the photosynthetic light reaction shows that water molecules are the source of these electrons. How is it that the DPIP was only able to receive

61. ## biology

In both lecture and lab, the significance of water (H2O), molecular oxygen (O2), and carbon dioxide (CO2) has been emphasized with regard to their energy content or participation in metabolic oxidation and reduction reactions. This lab has demonstrated

62. ## physics

A 4111.0 kg truck is parked on a 14.6° slope. What is the friction force on the truck?

63. ## calculus

Use a linear approximation (or differentials) to estimate the given number (2.001)^5

64. ## math

The birth weight of childeren were 7 pounds 2 ounces, 6 pounds 10 ounces, 8 pounds 5 ounces, 7 pounds 9 ounces. Luis estiamted the total weight of the babies at birth was 30 pounds. Which best describes his estimate? A. More than the actual weight because

65. ## physics

A 4111.0 kg truck is parked on a 14.6° slope. What is the friction force on the truck?

66. ## 3rd homework

the water cycle lesson 2 how water changes and moves 1. ____________ water changes from a __________ to a _________________ 2. ____________ water changes from a _________ to a ________________ 3. _________________ Liquid water falls to the ground as

When a ball is thrown straight down from the top of a tall building, with initial velocity 30 ft/sec, the distance from the release point at time t in seconds is given by s(t)=16t^2+30t. If the release point is 300 ft above ground, what is the velocity of

68. ## assignment

Q.17: In the Figure 3.22 find the acceleration of the masses and the tension in the string.

69. ## ELA

This Is a Argumentative Essay On Plymouth,Massachusetts, Can you see if I need some corecctions? Plymouth, Massachusetts “The cowards never started and the weak died along the way” It is applied to the Plymouth Pilgrims, who clearly had obtain courage,

70. ## English

1. Mooncakes have a full-moon shape. 2. Songpyeon has a half-moon shape. (What is the part of speech of 'full-moon' and ' half-moon'? Adjective or noun?)

71. ## physics

Mary and John are on opposite sides of a seesaw. Mary has 3x the mass of John. If Mary is sitting at a distance of .5m from the fulcrum, how far must John site in order to keep it balanced.

72. ## physics

what is the efficiency of a pulley that requires a worker to do 250 J of work to lift an object that requires 170 J of work

73. ## Ap calculus

Find the equation of the tangent line to the curve g(X)= 2cos(2X)/(3X) at the point x= pi/3

74. ## world history

names 6 sumerian inventions

75. ## Math 8th grade algerbra

a cylinder has a radius of 3cm and a length of 10cm every dimention of the cylinder is multiplied by 3 to form a new cylinder how is the ratio of the volumes related the ratio of corresponding dimensions? how would i do this?

Oxidized (blue) DPIP becomes colorless when it is reduced – that is, when it receives electrons. A diagram of the photosynthetic light reaction shows that water molecules are the source of these electrons. How is it that the DPIP was only able to receive

In both lecture and lab, the significance of water (H2O), molecular oxygen (O2), and carbon dioxide (CO2) has been emphasized with regard to their energy content or participation in metabolic oxidation and reduction reactions. This lab has demonstrated

78. ## Physics

If a balloon is filled with helium gas of molar mass 4x10^-3, at a pressure of 1*10^5, What is the number of moles of gas in the balloon?

Solve by substituion method 2r-5s=-12 5r+2s=57

80. ## Chemistry

22. Arrhenius defined an acid as hydrogen containing and able to form hydrogen ions in water.- T? 23. A strong acid does not have to be a strong electrolyte.- F? 31. Bases generate (OH) ions.- T 32. A neutralization reaction forms water from hydronium and

81. ## algebra

how do I simplify -2xyz^3/5x^2z^2 times 10xy/x^3

82. ## Science HELP!

If a balloon is filled with helium gas of molar mass 4x10^-3, at a pressure of 1*10^5, What is the number of moles of gas in the balloon?

83. ## math111(2)

Suppose h(x) = x^2 + 8 x + 5, with the domain of h being the set of positive numbers. Evaluate h^{-1}(8).

84. ## algebra

the area A of a triangle with base b and height h is given by A=1/2bh,find the area when b=28m(meters) and h=38m. The area is m

85. ## AMath

Write a polynomial function of minimum degree in standard form with real coefficients whose zeros include those listed 2, 3 and i.

86. ## AP Chemistry

Each increase in pressure of 100 atm decreases the melting point of water by 1.0 degrees C. Estimate the temperature at which liquid water freezes under a pressure of 400 atm. How do I approach this problem?

87. ## spanish

El museo está ____ teatro. a. a la derecha del b. al lado de c. detrás de d. a la izquierda de la A?

88. ## social studies

the U.S. banned the trans-atlantic slave trade in 1808. what effect did this have on sectionalism in america at this time?

89. ## Physics - spring balls

A 275g ball is resting on top of the spring that is mounted on the floor. You exert a force of 325N on the ball and it compresses the spring 44.5cm. If you release the ball from the position, how high above the equilibrium position of the spring-ball

90. ## physics

A heavy freight train has a mass of 11800 metric tons. If the locomotive can pull with a force of 691000 N, how long does it take to increase it's speed from 0 to 70.3 km/h?

91. ## math

an alloy of metals is 20% copper. another alloy is 50% copper.how much of each should be used to make 1000 gram of an alloy that is 45% copper?

92. ## physics

To make a bounce pass, a player throws a 0.60-kg basketball toward the floor. The ball hits the floor with a speed of 6.5 m/s at an angle of 57° from the vertical. If the ball rebounds with the same speed and angle, what was the impulse delivered to it by

My problem is easy, but i need help. My problem is Q=3K^.35 L^.87 EL=? Ek=? CRS=? CRS is 1.22> 1 I know, but not the rest than part b is when K=30, L=83, what is MPk=? MPL=? Please help

94. ## bioethics

For my bioethics class I need to create a "political" cartoon about clinical trials. (I say "political" because it's not really about politics, just the general format of a political cartoon.) I was trying to think of something related to placebos maybe,

95. ## math

-6 1/3 + -5 1/4 - 19/3 + - 21/4 then?

96. ## US History

26. What were the major factors which shaped American foreign policy in the period 1890 to 1900? Show how at least one of these factors influenced our actions in the Panama Canal controversy. Does this answer it?: In 1891, the United States demanded

97. ## Physics

The space shuttle is in a 200-mile-high orbit. What is the shuttle's orbital period?

98. ## social studies

the mexican-american war added the mexican cession to the U.S. in 1846-1848. what effect did this have on sectionalism in america?

99. ## Math

This number has 4 places to the right of the decimal point. It has 2 hundreds, 3 ten thousandths, and 1 tenth. It is in between 240 and 242. The thousandths place is one less than the ten thousandths and less than the hundredths. What are six numbers that

100. ## MATH

Earth, Jupiter, and Uranus all revolve around the sun. Earth takes 1 yr, Jupiter 12 yr, Saturn 30 yr, and Uranus 84 yr to make a complete revolution. One night, you look at those three distant planets and wonder how many years it will take before they have

101. ## French

How do you write these sentences in le passe compose? *Catherine la voit. *Le coiffeur les coupe. (les refers to les pommes) et *La fille la met sur la table.

102. ## Math

Have to find the age of a family of 7. I'm told that the youngest child is 6, the oldest is 16 have a set of twins that are 15. The mean is 11 and the mean is 10. I added up all the numbers and got 73. Thought that if I added 4 I got 77 and then could get

103. ## math

hi i need to solve this question but i don't know how to do it when there is dividing included x(x-8):5=92 i did this much and then i found out that what i was doing was wrong x(x-8):5*5=92*5 2x-8=460 2x=468 x=234 but it seems wrong

104. ## social studies

william lloyd garrison's american anti-slave society was formed in the 1830s. what effect did this have on sectionalism in America?

105. ## hinduism

I have to answer these questions in a few sentences, but I can't figure the first one out. Different websites tell me different stuff.. 1. How was the world created? 2. Description of God There is no single deity, instead there are thousands of gods.

106. ## Chemistry

How to make into compounds to get a formula? Li+: Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4- Cu:Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4- Pb2+:Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4- Ca2+:Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4- Al3+:Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4-

107. ## social studies

cotton made up 60% of all U.S. exports in 1850. what effect did this have on sectionalism in america?

108. ## geometry

if segment AD is 10 units; segment AB is 8 units; segment AC is 12 units; segment ED is 4.5 units. If angle BAD is 50 degrees what is the measure of angle ADC

109. ## 6 principals of art

I have to Draw 4 examples of the 6 principles of art. I have no idea what she is asking me to do. I can make dots all day but I don;t think this is what she is asking!!!! Help plzzzz.

110. ## math

-5s = 5/7 s=?

111. ## algebra

(3d*d*d e*e*e)(-5d e*e*e)

112. ## math

triangle ABC has vertices A(3,4), B(4,-3) and C(-4,-1). a. draw a sketch of the triangle b. draw the altitude from vertex A c. find the slope of side BC which is =-1/4 d. find the slope of the altitude from A which is 4 e. find the equation of the line

113. ## social studies

1. What was the first PERMANENT European colony in North America? hope someone can help!!

114. ## Writing

What are some strategies we can use to analyze our audiences? At which stage in the writing process should we analyze the audience?

How to draw a Lewis dot structure....

116. ## Social Studies

I need a site for lot's of tourist attractions of India. Please help me find one thanks!

117. ## Writing

What are the rules involved when using this type of formatting? How did the formatting of those messages affect their level of success? Please help with this question. thank you

118. ## chemistry

Would it make a difference if calcium bromide solution is used rather than sodium solution?

Ms Sue thank you for the help with my other word problem can you check this one for me? Write a word problem and find the solution to the equation. 1/2-2/3 THe answer is -1/6 and the word problem I created is: Janet put 6 suckers on a table. 3 suckers were

120. ## math!!!!!!! help 3

a water cooler contains 5 gallons of water.if drink 3/5 gallon for each of the next 6 days how many gallons will be left in water cooler at the end of the sixth?

121. ## Math 111

Find the quadratic function that has vertex (-1, 8) and whose graph goes through the point (8, 170). I could not understand this problem I Can not for the lift of me get it. I got as far as some number(x+1)^2+8 but i don't know what the number before all

122. ## english

What format is used when writing a book report

123. ## chemistry

the model of the atom that pictured the atom with electrons struck randomly throughtout the mass of the atom was called the

124. ## calculus

Find the formula for the described function and state its domain. An open rectangular box with a volume of 8 cubic meters has a square base. Express the surface area of the box as a function of S(x) of the length x of a side of the base.

125. ## 5th math

Estimate and solve. 214+182= Estimate___________ Solution____________ 1,532-176= estimate:_____ can you please show the work too thanks!! Solutionz:____

126. ## Chemistry

How many atoms of mercury are present in 5.4 cubic cm of liquid mercury? The density of mercury is 13.55g/cc. mass Hg = volume x density Then convert to moles. Then remember there are 6.022E23 atoms for every mole. I still don't get how to do this! HELP

127. ## college chemistry

ë for one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value using n1 = 2, and n2 = 5 I have tried to figure this out so many times, found the same answer, and it's always wrong. please help

128. ## Physics: Moment of Inertia

A yo-yo has a rotational inertia of 760 g·cm2 and a mass of 200 g. Its axle radius is 4.0 mm, and its string is 100 cm long. The yo-yo rolls from rest down to the end of the string. (a) What is the magnitude of its linear acceleration?

129. ## statistics

among the exames in the examination 30%, 35% & 45% failed in statistics, in maths, & in atleast one of the subjects respectively. one student is selected at random. find the probability that: (a)he has failed in maths, (b)he passed in statistiics if it is

130. ## Physics

A car travelling at 72km/h drives off a cliff 400m high. How long does it take to hit the ground?

Compare Thomas Paine to someone well known today

132. ## Chemistry

Suppose that the microwave radiation has a wavelength of 12.4 cm. How many photons are required to heat 255 mL of coffee from 25.0 C to 62.0 C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 J/(g/ K), as water

133. ## MAT 115

I need help with the following question. I tried it, but I don't think I am right. I got 11 1/15 for an answer. I am really confused. Please show me how you did it. Evette has 41 1/2ft of string. She wants to cut it into pieces 3 3/4ft long. How many

134. ## english

it pertains to Halloween

135. ## probability

among the exames in the examination 30%, 35% & 45% failed in statistics, in maths, & in atleast one of the subjects respectively. one student is selected at random. find the probability that: (a)he has failed in maths, (b)he passed in statistiics if it is

136. ## physics

A(n) 3.46 g bullet is fired into a(n) 2.4 kg ballistic pendulum and becomes embedded in it. The acceleration of gravity is 9.8 m/s2 . If the pendulum rises a vertical distance of 7.13 cm, calculate the initial speed of the bullet.

137. ## PRODUCT MAP

WHAT ARE THREE TYPES OF GRAIN GROWN IN PENNSYLVANIA

138. ## math

find x 4x-5/1-5x = x+1/x+7 please can you show me the method thanks

139. ## literary

In what distant deeps or skies Burnt the fire of thine eyes? On what wings dare he aspire? What the hand dare seize the fire? and Tyger! Tyger! burning bright In the forests of the night, What immortal hand or eye Could frame thy fearful symmetry? Are "In

WHAT ARE THREE TYPES OF GRAIN GROWN IN PENNSYLVANIA

141. ## math

how to factor 4x^2+4x-1 and x^2-2x+1=5

142. ## biology 101

what is the inheritance of sex-linked traits.

143. ## writing

I am writing a concept essay and have chosen the stigma of mental illnes. My teacher says this is not a concept...help because I am lost!

144. ## english

I need help on how to write a paragraph on comparing and contrast regaring academic writing using four comparatives and four superlatives?

145. ## physics

A block of mass 4.253 kg is released on the track at a height 5.52 m above the level surface. It slides down the track and makes a head-on elastic collision with a block of mass 17.012 kg, initially at rest. The acceleration of gravity is 9.8 m/s2 .

NAME THREE TYPES OF GRAIN GROWN IN PENNSYLVANIA

147. ## Molly

The CoolWheels Toy Company is designing a new track where a car (mass 60 g) is launched by a spring-loaded starter (k=11 N/m) and goes through a vertical loop (radius 9 cm). If the spring is depressed ∆x=19 cm from equilibrium, what is the speed of the

148. ## English

Put the water into the pan first.

149. ## Kristen

A flywheel has a moment of inertia of 2.6 kg·m2. What is the average power needed to spin it up from rest to an angular velocity of 100 rad/s in 30 seconds?

150. ## grammar

How would u use grammar in the future: pronoun, adjectives, verbs, and subject. I know how to use them just don't know how to explain on paper for the future

151. ## chemistry

What is the molarity of a solution prepared by dissolving 8.5 g NaCl in enough H2O to give 600 ml of solution?

152. ## geometry

find circumerence 22/7 x 3.5

153. ## geometry

ABCD is a quadrilateral with BC perpendicular to AB and DE is perpindicular to AB. If AB is 38 yard and EB equals 18 yards, BC equals 13 yards, and DE equals 15 yards. Find the area of ABCD

154. ## math

what are the possible advantages and disadvantages of using least common denominator when adding and subtracting fractions?

155. ## American History

I need to compare Thomas Paine to a well known person today. Any suggestions?

156. ## math

For every girl taking classes at the martial arts school, there are 3 boys who are taking classes at the school. If there are 236 students taking classes, write and solve a proportion to predict the number of boys taking classes at the school.

157. ## english

Looking for topics to write an essay where the topic is debatable. Any ideas? Essay needs to be 5-7 pages

158. ## College Chemistry

Determine the values of Kc that correspond to the following values of Kp (a) SO2Cl2(g)--->SO2(g) + Cl2(g) Kp= 2.9 x 10^-2 at 303 K (b) 2 NO2 (g)--->2NO(g)+O2(g) Kp= 0.275 at 700 K (c)CO(g) + Cl2(g)---> COCl2(g) Kp= 22.5 at 395 degree Celsius

159. ## MATHS

Complete the pattern. 1,1,4,25,--------,749956 Thanks for your help

160. ## science

the carrying capacity for a population is estimated at 500. the population size is currently 400 and r max is 0.01. what is dN/df?

161. ## world issues

what impact did ancient roman weapons have on our current society?

162. ## economics

With illustrations, show how the study of business economics helps a business manager in decision making?

163. ## English

Be sure to bring your skates in before the rain starts. 2.The boy clasped the money tightly in his hand. 3.What do you think you'd find over the rainbow? 4.High above the mountain, the hawks wheeled in lazy circles. 5.A fire blazed inside, welcoming the

164. ## College Chemistry

Calculate the cell potential for the following Galvanic cell: Co(s) Co2+ (0.15 mol L-1, ag)Fe 2+ (0.68 mol L-1, ag)Fe(s) Given that the standard reduction potential Eo for Co2+ is -0.28 V and Eo for Fe2+ is -0.44 V. Anwer is -0.14 V The left side of the

165. ## math/209

Mike would like to enlarge his rectangular front yard which is currently 80 feet by 40 feet. He can only extend the width and length by 5x feet. If x = 7 feet, what will be the increase in area of the front yard? How can this problem be raised to a higher

166. ## Physics - spring balls

A 275g ball is resting on top of the spring that is mounted on the floor. You exert a force of 325N on the ball and it compresses the spring 44.5cm. If you release the ball from the position, how high above the equilibrium position of the spring-ball

167. ## 6th grade ancient roman weapons

what impact does ancient roman weapons have on our current society?

168. ## Physics - inverse square law (check + help)

Two identical objects have charges from +6.0*10^-6 and -2.0*10^-6, respectively. When placed a distance d apart, their force of attraction is 2,0N. If the objects are touched together, then they moved to a distance of separation of 2d, what will be the new

169. ## College Chemistry

Determine Kc at 298 K for the reaction 1/2 N2(g0 + 1/2 O2(g) + 1/2 Cl2(g)--> NOCl(g), given the following data at 298 K 1/2 N2(g) + O2(g)--> NO2(g) Kp= 1.0 x 10^-9 NOCl(g) + 1/2 O2(g)-->NO2Cl(g) Kp= 1.1 x 10^2 NO2(g) + 1/2 Cl2(g)--> NO2Cl(g) Kp= 0.3

170. ## Math

I am in the 5th grade and my homework tonight is about complex numbers. I have no idea how to do complex numbers, not to mention, I don't know what they are. Can you help me?

171. ## math

2 1/2 m = 7/12 m=1/4? 2 1/8k = 7 k= 3 5/17?

172. ## MATH-STUCK

Express each power as an equivalent radical. K. I don't know how to write this, but I'll explain. There is a fraction. 1 over 9. And 9 has a power up to it which is 5 and a power down which is 3. I don't get how to express this power as an equivalent

173. ## Physics

create a problem that could be represented/answered by the following equation. Include a sketch. Be sure to ask a question. 2kg * a = kg * 10N/kg * sin30 - 0.3 2kg * 10N/kg * cos30 so far I got that the object has a 20N downward force and a pull 30 degrees

174. ## College Chemistry

The rate constant for decomposition of compound X was determined to be 1.0x10^-4 s-1 at 298 K and 1.0x10^-2 at 365 K. The activation energy for reaction is: I don't know if this is correct 8.314 x 10^-3 x 298x365 divided by 365 - 298 x In 1.0 x10^-2

175. ## College Chemistry

The equilibrium constant for the conversion of cis-stilbene to trans-stilbene is Kc = 24.0 at 200 C. If cis-stilbene is placed in an empty container at an initial concentration of 0.850 mol/L. What is the final concentration of trans-stilbene in the

176. ## Chemistry

Hydrated calcium sulfate contains 55.8% sulfate by mass. Calculate the value for "n".

177. ## math

what are the tenths frations to desimals

178. ## global

if you are a greek individual living under ottoman rule, what would you say to persuade a European nation to help your cause ?

179. ## geometry

find values for r and t such that the inequality r < S < t best describes s, the length of the third sides of a triangle for which the lengths of the other two sides are given. 11. 2 and 4 thanks for the help !

180. ## physics question

A 278-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an

181. ## English

I have to write 4 sentences using an adverb and 4 using a preposition. Could you please check? I will list the adverbs first. 1.I'm sure he let the dog come in last night. 2.We watched the balloons floating far above our heads. 3.The bus drove past the

182. ## math

round to the nearest thousand,the nearest hundredand nearest ten

183. ## english

it looked just like the older (boy's, boys's) which one is the correct possessive noun in this sentence?

Phone organize two wrod.letter.list.word how do I do it

185. ## accounting

transactions 1.bought machinery for cash rs.50,000 2.payment made to XYZ store rs.10,000by cheque 3.Purchased office furniture on credit for rs.15,000 4.Rs. 1,000 received as a rent for the portion of office building rented out 5.Paid salaries of Rs.40,000

186. ## chemistry

Determin whether Cd2+ can be separated from Zn2+ by bubbling H2S through a 0.3 M HCl solution that contains 0.005 M Cd2+ and 0.005 M Zn2+. Ksp for CdS is 8x10^-7 and Ksp for ZnS is 3x10^-2.

187. ## Calculus

Find the Derivative of y=9(5-x^2)^4

188. ## chemistry

Determine whether Cd2+ can be separated from Zn2+ by bubbling H2S through a 0.3 M HCl solution that contains 0.005 M Cd2+ and 0.005 M Zn2+. Ksp for CdS is 8x10^-7 and Ksp for ZnS is 3x10^-2.

189. ## Question on essay ( Please respond?)

Is there anyway I could email a tutor and send them a picture I scanned of my homework, because it's a bit hard to explain over words? Thanks. -Allyson

190. ## statistics- normal standard distribution

a set of data is normally distributed with a mean of 500 and standard deviation of 100: *what would t he standard score for a score of 700 be? According to my calculations 700-500/100=200/100=2 how would i interpret that. please show work. i know that i

192. ## Ap calculus

evaluate the derivative of f(X)= 3Xsin(X) at a=0

193. ## bus math

Determine the selling price of a 15-year, 4.725% bond, with \$1000 maturity value, with a yield of 4.735%. (Assume twice-yearly interest payments. Round your answer to the nearest cent.)

194. ## statistics- normal approximation

find the normal approximation for the binomial probability that x=5, where n=12, and p=0.7. compare this probability to the value of p(x=5). * the only thing that i have come up with is that value of p(x=5) is o.29 when looking it up on the table. how

asked by mary- where do i begin
195. ## HELPPPPP

so im done with everything except fro this question : A(n) 2.3 kg object moving with a speed of 8.6 m/s collides with a(n) 4 kg object moving with a velocity of 8.8 m/s in a direction39.0135◦ from the initial direction of motion mof the 2.3 kg

196. ## bus math

Meg's pension plan is an annuity with a guaranteed return of 7% interest per year (compounded monthly). She would like to retire with a pension of \$20000 per month for 20 years. If she works 28 years before retiring, how much money must she and her

197. ## History help Last question

Last question regarding FDR. why would someone think that a country that is concentrated on recovery programs and the results, mean orientation of foreign policy? Could someone please write a brief explanation about this. I don't get how foreign policy

198. ## Writing an essay, help please?

Here is what I've done so far: tinyurl(dot)com/25932b5 ( This is a link, so I put spaces there so I could put it) and here are the directions: //tinyurl(Dot)com/243s3q3 I need help filling out the rest of the paper, Can somebody help me fill out the next

199. ## Math

find values for r and t such that the inequality r < S < t best describes s, the length of the third sides of a triangle for which the lengths of the other two sides are given. 11. 2 and 4 thanks for the help !

200. ## Physics

A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular path?

201. ## math correct or no?

The birth weights of 4 childeren were 7 pounds 2 ounces, 6 pounds 10 ounces, 8 pounds 5 ounces, 7 pounds 9 ounces. Luis estimated the totall wieight of te babies at birth was 30 pounds. Which best describes his estiamte? A. More than the actual weight

202. ## calculus

Consider the following function. f(x) = (x+2)/(x-3) (a) Find f '(x) (b) Find f '(4)

203. ## History

Why was US participation in the international economic system vital? for exchange-rate stabilization. Could someone explain this to me. I've already gone through websites.

204. ## math

what is the greatest common factor using prime factoraztion for 90 and 126

205. ## math

Maureen forgets to turn a faucet off. After a minute, 1.5 gallons of water comes out of the faucet. Which equation can bw used to find the number of gallons, g, that comes out of the faucet after 2 hours? A. g= 1.5 x 1/30 B. g=1.5 x 1/120 C. g=1.5 x 120 D.

206. ## chemistry

How to make into compounds to get a formula? Li+: Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4- Cu:Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4- Pb2+:Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4- Ca2+:Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4- Al3+:Br-, O2-, CN-, SO3^2-, PO3^3-,MnO4-

208. ## math

A book is 1 3/4 inches thick. There are 8 copies of the same book stacked in a bookstore. How tall is the stack in inches?

209. ## chemistry

if the beaker was wet at the beginning of the experiment for the inital mass of the beaker, how would that affect the experimentally determined number of molecules of water in the hydrate?

210. ## math

Tami is cutting an 8 1/2 inch wide piece of paper in strips for an art project. How many 1/2 inch strips can she cut?

211. ## physics

A car accelerates from rest at 7.9 m/s2. How much time does it need to attain a speed of 5 m/s?

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 13 m/s. The cliff 42 m above the water’s surface With what speed does the stone strike the water? Answer in units of m/s..

213. ## math

correct or not correct? 6 5/6 + 4 2/3 = 11 1/2 and 6 2/9 - 2 2/3 = 3 5/9

214. ## Physics

A car (mass 920 kg) drives up a hill (height 328 m) in 143 seconds. At the bottom of the hill, it has a speed of 24 m/s, but at the top, it has slowed down to 14 m/s. Neglecting friction, what is the average engine power?

215. ## physics

An 8.4 g bullet leaves the muzzle of a rifle with a speed of 621.5 m/s2. what constant force is exerted on the bullet while it is traveling down the .6 meter length of the barrel of the rifle?

216. ## math

Trains A and B are traveling in the same direction on parallel tracks. Train a is traveling at 100 mph and train B is traveling 120 mph. Train a passes a station at 7:20 P.M. If train B passes the same station at 7:35 P., at what time will train B catch up

217. ## science

if a barrier island that is 1 km wide and 10 km long loeses 1.5 m of its width per year to erosion by a longsore current, how long will the island take to lose one-fourth of its width?

218. ## math 4

multiply a mixed number by a proper fraction ? results in a number greater than 1. what goes where the ? mark is

219. ## INTERNET BASICS

W hich one of the following is a domian name of a URL?

220. ## math

A train travels at rate of 40 miles per hour for 3 hours. The train enigineer wants to make a trip back in 2 1/2 hours. Which equation can be used for r , the rate the train has to travel on the trip back? A. r= 40 x 3/2.5 B. r= 40 x 3 x 2.5 C. r= 40 x

221. ## physics

find the force exerted by the rope on the car when the angle is 2.9 degrees and you are pulling with a force of 384 N but the car does not move

222. ## statistics

I have been working on this problem (and looking through my book and the internet) and could use direction. Info given: P(A or B)=.85 (A has line over it) P(A and B)= .41 (A has line over it) P(A or B)=.21 (A and B have line over it) Find P(A/B) (B has a

223. ## physics

A baseball is thrown at an angle of 26◦ relative to the ground at a speed of 25 m/s. The ball is caught 50.2046 m from the thrower. The acceleration due to gravity is 9.81 m/s2 . How long is it in the air? Answer in units of s.

224. ## math

Most populated U.S cities City Population(millions) New york - 8.10 Los Angeles - 3.85 Chicago - 2.86 Houston - 2 01 Between which two cities was the difference in population about 800,000 people? A. Chicago and Los Angeles B. New york and Los Angeles C.

225. ## physics

a runner in the starting blocks is it a potential energy or a kinetic energy?

226. ## Physics

A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air

227. ## Calculus

Use Newton's Method with the function f(x)=x^2-2 and initial value Xo=2 to calculate x1,x2,x3. I have no idea how to do this

229. ## math

-12/13 = -1/4 w w= -3 9/13? 2 3/4 =6 3/5y y=5/11?

230. ## calculus

Use a linear approximation (or differentials) to estimate the given number (2.001)^5

231. ## phsics can someone check if i did it right

A block of wood of mass 3kg is on a rough incline of 37degrees. Find the min value of the coefficient of static friction for the block to remain stationary? Fn=3*9.8cos37 Fn=23.4 3*9.8sin37-us(23.5)=0 us=.743

232. ## English

Thank you very much for helping me. I just want to make sure that all the alternatives are possible. 1) I like spending time on the net (Can you say that?) 2) I lived in London until the age of two. (better: until I was two years old; up to the age of

233. ## physics

The electric motor of a model train accelerates the train from rest to 0.640 m/s in 19.0 ms. The total mass of the train is 875 g. Find the average power delivered to the train during its acceleration.

234. ## intro to chem

disolving sucrose, NaCl< and calcium chloried affect the boiling point of frezing point of water. Assuming that you have 0.1m solution of all these 3 compounds: a)rank then in order of decreasing freezing point. b) rank in order of increasing boiling point

1/3*4=

236. ## bio

Are all hairs on body the same structurally? explain. help please

237. ## Calculus

In the viewing rectangle [-4, 4] by [-20, 20], graph the function f(x) = x3 - 3x and its secant line through the points (-3, -18) and (3, 18). Find the values of the numbers c that satisfy the conclusion of the Mean Value Theorem for the interval [-3, 3].

238. ## college math

the Laplace transform of e^4t(cos 2t)?? please i need help. thanks

239. ## PHYSICS

A 0.150 kg block is placed on a light vertical spring (k = 4.60 103 N/m) and pushed downward, compressing the spring 0.100 m. After the block is released, it leaves the spring and continues to travel upward. What height above the point of release will the

240. ## math

2 4/5 - 3 so 3 becomes 3/1 right? Then change 2 4/5 to 14/5 = 42/15 and 3/1 = 45/15 right?

241. ## PHYSICS

An athlete on a trampoline leaps straight up into the air with an initial speed of 9.3 m/s. Find the following: (b) the speed of the athlete when she is halfway up to her maximum height

242. ## math/algebra

find the slope if it exists, of the line containing the pair of points. (1,3) and (7,-7) I know you have to do it like -7-3/7-7 and then I get -10/6 and then -1.66666666666667 what do i do to simplify it and write as the answer

asked by find the slope if it exists

The manager of a an out-patient surgical unit shares patient information with a pharmaceutical representative to assist the rep in putting together a survey could assist with the FDA approval for a new drug to combat serious post-op infections. Is the

244. ## Calculus

find the parabola whose minimum is at (7,6) rather than the point given in the book. The parabola's equation is y = x2 + ax + b, where a = and b =

245. ## math

Given: line nm is congruent to qr; angle m and angle r are right angles; line mp is congruent to ro. Prove: triangle nmo is congruent to triangle qrp and angle n is congruent to angle q

246. ## math

How long would it take for the Earth to complete a full turn if a person at 43.8° northern geographical latitude floats apparently weightlessly across the room? Use REarth = 6,390 km for the radius of Earth.

247. ## Calculus

find the values a and b must have to make the function f(x) = axebx have the following properties, rather than the ones the book requires: Make f([ 5/4]) = 2, and make sure f has a local maximum when x = [ 5/4]. a = b =

248. ## Physics

A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air

249. ## 3rd homework

the water cycle! lesson I water on earth type of water 1. ? where found 2. ? 3 ? 4 ? uses 5. ? 6. ? 7. ? 8. ? where found 9. ? 10. ? 11. ? uses 12. ? 13. ? 14. ? 15. where salt and fresh water meet is called an ? please help with the ?'s. I have no idea

250. ## physics:energy

How much power is needed to push a box (mass 27 kg) over a surface (coefficient of friction μk=0.5) with a velocity of 1.1 m/s?

251. ## chem

how many milliliters of .242 m of NaOH are required to exactly titrate 18.0 grams of H2C2O4

252. ## math

You type four letters to four different people and address the envelopes. If you then insert the letters into the envelopes randomly, what is the probability that exactly three letters will go into the correct envelopes? 1/2 1/3 1/4 0 Explain your answer.

253. ## Spanish

What does De donde eres? Mean

I need help with someone to go over my eassy with me can someone please help me.This is my first time using this site so I don't know how it really works SOMEONE PLEASE HELP ME!!

255. ## college algebra

Use the theorem on bounds to establish the best integral bounds for the roots of the equation w^(4)-8w^(3)+2w^(2)+10w-1=0

256. ## math

-12/13 = -1/4 w w= -3 9/13? 2 3/4 =6 3/5y y=5/11?

In how many ways can 5 ice cream toppings be chosen from 12 available toppings?

258. ## college algebra

Use Descarte's rule of signs to discuss the possibilities for the roots of the equation. Do not solve the equation -5r^(4)+6r^(3)+9r-15=0

259. ## English

Can you please check if the following sentences are correct? Thank you. 1) The song "Don't worry be happy" says that we shouldn't worry about what happens to us. 2) In particular, if we have got some troubles, are out of money or can' pay the rent. 3)The

260. ## Physics HELP!!!

A ball (radius 0.2 m) is rolling on level ground toward an incline. If its velocity is 3 m/s, to what maximum height above the ground does it roll up the incline? The ball is a hollow sphere with a moment of inertia I=(2/3)mr2 (m is the mass of the ball, r

261. ## English

1.I cooked kimchi fried rice. 1-1. Kimchi fried rice was cooked by me. 2. I cooked extra rice for guests. 2-1. Extra rice was cooked for guests by me. 2-2. Extra rice was cooked by me for guests. (Are the passive forms all grammatical? Which one is right,

262. ## Math (Pre-Calculus)

Find an equation of the line containing the points (8,-6) and (8, -4) so far i've tried y-y1=m(x+x1) but currently cannot get the answer....T-T the answer is suppose to be x=8 plz show the work so i can study form it and do it myself the next time... thnx

263. ## Language Arts 8th grade

Archaic-that which has ceased to be used except for special purposes as in poetry or church ritual some words like thou are archaic list as many words that you can think of that would be considered archaic. i cant think of anymore please help!

265. ## PHYSICS

The chin-up is one exercise that can be used to strengthen the biceps muscle. This muscle can exert a force of approximately 800 N as it contracts a distance of 7.5 cm in a 78 kg male. How much work can the biceps muscles (one in each arm) perform in a

266. ## math!!!!!!! help

Traniers measure horses in hands the distance acrosss an adults plam the average height of a horse is 15 1/2 hands if a hand is bout 1/3 foot how tall is an average horse in feet?

267. ## Chemistry

12. Solutions cans be supersaturated if they contain more dissolved solute than saturated solutions under the same conditions.- T? 16. Heating a solution decreases the solubility of the gas in it.- T? Thanks -MC

268. ## costing

what are major types of expenditure associated in maintaining stocks.

269. ## Algebra

Use the Gauss-Jordan method to invert 1 0 0 2 -1 0 0 0 1 A1= 1 1 1 A2= -1 2 -1 A3= 0 1 1 0 0 1 0 -1 2 1 1 1 can someone help me to invert those matrix using Gauss-Jordan method

270. ## English

1. Do you have anything to say about this? 2. Do you have to say anything about this? (Are both grammatical and the same?) 3. We have many things to do. 4. We have many things that we have to do. 5. We have many things that we will do. (If we pharphrase

271. ## English

1. I have many friends to meet. 2. I have many friends that I have to meet. 3. I have many friends that I will meet. 4. I have many friends that I can meet. (What does #1 mean? Does #1 mean #2, 3, or #4?)

272. ## Biology

also located on the X chromosome is a gene that codes for deafness. This gene is recessive. a black female cat that is heterozygous for deafness (Dd) is crossed with a yellow cat that is not deaf What is the Punnet Square . and must use two letters on the

273. ## English

On the table lies a very hard old bookmark. 2.You should not fold any pages in a library book. 3. Lately, I have been reading more nonfiction books. 4. During the week Mom is entirely too busy to read. 5. She recommends especially enjoyable books to all

274. ## math

find x x^2-3x-4 = x^2 +11x+24 please can you show me you method thanks

275. ## Chemistry

Data: C(graphite) + O2(g) forms CO2 (ga) Delta H = -393.5kJ H2(g) + 1/2O2(g) forms H2O(l)Delta H = 285.8kJ. CH3OH(l) + 3/2O2(g)forms CO2(g) + 2H2O(l)Delta H = -726.4 Using data above, calculate the enthalpy change for the raction below C(graphite) + 2H2

circle the best estimate for each problem. then solve. 52.2*39.7=_____ A.2,00 B.20,000 C.200,000 Solution:_______________________. 148.3*232.51=____ A. 3,000 B.30,000 C.300,000 Solution ________________. please! show me work too so, i can practic for this

277. ## PHYSICS

A hummingbird is able to hover because, as the wings move downwards, they exert a downward force on the air. Newton's third law tells us that the air exerts an equal and opposite force (upwards) on the wings. The average of this force must be equal to the

278. ## Statistic

the percentile rank of t5 = 1.476

279. ## ap calc bc

hi! ok, i know that deriv(cscx) = -cscxcotx and that deriv(cos) = -sinx deriv(cotx) = -((cscx)^2) my question is: is this (statements below) correct? antideriv(cscxcotx) = -(cscx) antideriv(sinx) = -cosx antideriv((cscx)^2)= -cotx were those

280. ## chemistry

What volume will 0.35 mol of Ar occupy at -10 degress C and 0.96 atm?

281. ## physic

Six roller-coaster carts pass over the same semicircular "bump." The mass M of each cart (including passenger) and the normal force n of the track on the cart at the top of each bump are given in the figures. Iam given the force in N of the cart at the

282. ## English

1. Do you do any volunteer work? How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do volunteer work, either. (Are the answers grammatical?) 4. Do you do any volunteer work? 5. Are you doing any volunteer work?

283. ## AP calculus BC

hello i know that deriv(cscx) = -cscxcotx and that deriv(cos) = -sinx deriv(cotx) = -((cscx)^2) my question is: is this (statements below) correct? antideriv(cscxcotx) = -(cscx) antideriv(sinx) = -cosx antideriv((cscx)^2)= -cotx were those antiderivatives

284. ## physics

A 70kg man stands on a bathroom scale in an elevator. As the elevator starts moving, the scale reads 90kg Is the elevator acceleration up or down, is the elevator moving up or down?

285. ## chemistry

When an evacuated glass bulb at 75.0 ml volume is filled with a gas at 25.3 degrees C and 747 mm Hg, the bulb gains 0.0114g. The gas is?

286. ## chemistry

When 2.53 g of NaOH(s)(40.0g/mol) dissolves in 100.0 g of water, the temperature of the solution changes from 20 degrees C to 26.3 degrees C. Calculate qrx in KJ/mol specific heat of the solution is 4.18 J/(g*K)

287. ## science

for radio waves with a frequency of 454.4 nm, determine the wavelength, the energy of a photon and the energy of one mole of photns in kj/mol

288. ## social studies

As a result of reengineering, work processes are: radically redesigned and simplified. turned over to outside companies. made much more complex. controlled by computer programs.

289. ## Religious Education

how religion affects clothes

290. ## chem

calculate the molality of a solution that has 1.02kg sucrose (C12H22O11), dissolved in 554g water.

291. ## math

correct or ot correct? 15 - 10 4/5? and -1 7/8 x 2 3/5 = -180?

292. ## Pre Calc!!!!!!!!!! test tom!!

Square root of x is the equation. Translate: down seven reflected over y axis left five ANSWERS: square root of negitive x+5)-7 negitive square root of x+5)-7 square root of x-5)-7 square root of x+5)+7 IM not getting any of these HELP!!!

293. ## math/algebra

Trains A and B are traveling in the same direction on parallel tracks. Train a is traveling at 100 mph and train B is traveling 120 mph. Train a passes a station at 7:20 P.M. If train B passes the same station at 7:35 P., at what time will train B catch up

3X+4Y

295. ## English

Can you please check if the following sentences are correct? Thank you very much. 1)The Romantics paid attention to the country as a place where man's relationship with nature was still intact. 2)Wordsworth had a pantheistic view of nature, according to

296. ## math

1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and that there are a total of 115

297. ## Chemistry

I have an oxide material with an unknow metal. I know that the moles of the oxygen and the metal are 0.09 When I calculate the atomic weight my professors says I should get number in the 50's and 60's I don't. I get 16, which is oxygen. How do I figure out

298. ## math

Solve by substitution method: 3x+8y=33 x=31-6y

299. ## Finished essay, needs Tutor's oppinion

Here is my finished essay. Could I please have the teachers opinnion on it? Link: //tinyurl( Dot) com/25cnjx8

300. ## science

Explain why turning is a form of acceleration?

301. ## Math

What does it mean if a line in R^3 is parallel to the xy-plane but not to any of the axes. I really don't know what this means in terms of how the parametric and symmetric equations of the line should look. Please help.

302. ## Chemistry

What is the pressure of the gas if 0.145 mol occupies 227 mL at 35°C?

303. ## math

2 3/4 - 6 3/5y I thought y= 5/11 but no?

304. ## accounting

From the following transactions, state which account will be debited and which account will be credited by filling up the appropriate boxes. S.No. Transactions Accounts involved Application Reason with respect to Rules of Debit and Credit Sample Example

How do I answer and graph this problem 4x + 3y = 4

306. ## Chemistry

What is the temperature (in kelvins) at which 0.0260 mol occupies 1.00 L at 0.563 atm?

307. ## Math

Your teacher has a large box containing an equal number of red and blue folders. There are 24 students in your class. The teacher passes out folders at random. Ten students receive a red folder. Compare the experimental probability of recieving a red

308. ## math

merle travelled six hundred twenty-three miles. hannah travelled eight hunderes one miles. hannah travelled how many more miles then merle?

309. ## physic

if a tape is wound around a cylinder at a rate of 1 rad/s for a half hour, if each rotation deposits one layer of tape and if the final difference between inner ad outer radii of the winding in one cm, what is the thickness of the tape?

310. ## math

1 1/2 m= 1 3/4 m= 1 1/6?

311. ## Chemistry

What is the number of moles in 1.00 L at -7°C and 725 torr. Remember 1atm = 760 torr?

312. ## 5 th grade math

write the nmber that has 6 in the ones place, a digit in the hundred-thousands place the is half the digit in the ones,the smallest odd digit in the thousands place, 4 in the tenths place 1 in all other places -,---,---.--?

313. ## farmington

Howard the soda jerk at Bea's diner slides a 0.60-kg root beer from the end of the counter to a thr=irst customer. A force of friction of 1.2 N brings the drink to a stop right in front of the customer.

314. ## English

I forgot to include the following examples. I really hope youcan have a look at them, too. 1) Like the stars in the Milky Way, the daffodils are part of a natural order determined by a natural law. 2) The daffodils are presented as living beings that

315. ## Math

What is the approximate length of the diagonal of a square if the perimeter of the square is 12ft? a. 1.7ft b. 3.5ft c. 4.2ft d. 12.7ft and how?I was confused on this question I tried to subtract and divide but nothing work.

316. ## math!!!!!!! help agian

1/4*50/1= (2 12/4)=(2 3/4)

317. ## ELA

*REDO*This Is a Argumentative Essay On Plymouth,Massachusetts, Can you see if I need some corecctions? “The cowards never started and the weak died along the way” It is applied to the Plymouth Pilgrims, who clearly had obtain courage, strength, and

318. ## math

factorise 9x^2-29x+34 thanks

319. ## math

Round the nearest quotient to the nearest tenth 0.47 + 0.03

320. ## geometry

What does this symbol mean in Geometry ¡ü?

321. ## math

A tugboat can go 10 miles upstream in the same time as it can go 15 miles downstream. If the tugboat goes 12 miles per hour in still water, what is the speed of the current?

322. ## Chemistry

Radiation in the ultraviolet region of the electromagnetic spectrum is quite energetic. It is this radiation that causes dyes to fade and your skin to develop a sunburn. If you are bombarded with 1.00 mol of photons with a wavelength of 288 nm, what amount

323. ## math

In a standard deck of playing cards there are 13 hearts. If 3 cards are drawn without replacement what's the probibility that all 3 cards will be hearts?

324. ## CHEMISTRY

1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution? 2)A Certain brand of iron supplement contains FeSO4-7H2O with miscellaneous binders and fillers. Suppose 22.93 mL of the

325. ## math

having trouble factoring this particular problem x^2-12x+36-49y2 factored by grouping x(x-12) (7y-6) (7y+6) the answer in the book has (x-6+7y)(x-6-7y) confused.

326. ## Poems

I won the competition for poems to go on tho grade or school!!!!!! I won with the poem: Magic chant, But I need a longer poem maybe?? Can anyone post a site with medium and long length poems please?? Thanks, Erin

-0.2x

328. ## US History

2. The Geneeva Protocols outlawed "weapons of mass destruction." Give three reasons why you think this policy was correct. Need help answering this. Thanks -MC

329. ## math

Which of the is a rational number but not an integer? a.0 b. 9/10 c -18 d. 2.52943...

330. ## History

What is the Battle of Bunker Hill? Explain with 200 words.

What fraction of a circle is 33 1/3 of a circle?

332. ## history

.How did the battle between the Monitor and the Virginia change naval warfare?

what is the riddel books never written

334. ## math

explain whether each set is closed under the given operation {-1,0,1}multiplication? please help and tell me the steps thanks!

335. ## physics

A soccer ball of diameter 32 cm rolls without slipping at a linear speed of 2.4 m/s. Through how many revolutions has the soccer ball turned as it moves a linear distance of 16 m?

336. ## social studies

To develop your self-confidence: learn to rely mostly on intuition. develop a base of knowledge for problem solving. use enough negative self-talk to appear humble. downplay acquiring a lot of facts.

337. ## Earth/Environmental Science

_______ currents are currents that involve warm water flowing in different directions at different speeds close to the top of oceans.

338. ## algebra

what is the height of a solid with a volume of 120 m3 and a base of 30 m2

339. ## math

explain whether each set is closed under the given operation {-1,0,1}multiplication?

340. ## English

In Arthur Miller's "Death of a Salesman" What were the job rights, or Willy Loman?

341. ## IB Math

If AB is the same length as CD, BC is 2 cm shorter than AB and BE is 7 cm in length, find the length of AB.

342. ## chemistry

Suppose the ΔGof, ΔHof, and ΔSo are available and valid at 298 K. Which equation(s) could be used to calculate the change in Gibbs Energy if all product and reactant concentrations (pressures) are 1 M (1 atm) and the temperature is 298 K? Choose all

343. ## Physics- Work

A worker pushes a 1.50*10^3 N crate with a horizontal force of 345 N a distance of 24.0 m. Assume the coefficient of kinetic friction between the crate and the floor is 0.220. a. How much work is done by the worker on the crate? b. How much work is done by

344. ## language arts

what is the affix element for the word synonym and what is the affix meaning

345. ## french

I need someone to review my work to make sure I'm doing this correctly. I have to rewrite the following sentences replacing the direct object nouns with direct object pronouns. 1. Je veux voir Paul. Je le veux voir. 2. Elle monte l'escalier. Not sure on

346. ## phys

A mechanic pushes a 2.0 103 kg car from rest to a speed of v, doing 5350 J of work in the process. During this time, the car moves 29.0 m. Neglecting friction between car and road, find each of the following. (a) the speed v m/s (b) the horizontal force

347. ## math

last one on this topic i promise ;-) 4X-14+2X^3-7x^2 rearrange by degree 2X^3-7X^2+4X-14 and them im stuck..

348. ## physics

A person pulls with a force of 40 N on two boxes at rest. The top box is 3.0 kg and the bottom box is 6.0 kg. The coefficient of kinetic friction between the floor and the larger box is .20 and the angle is 30 degrees. a) if the smaller box doesn't slide

349. ## math111(3)

The function f(x)=(x+6)^2 is not one-to-one. Choose the largest possible domain containing the number 0 so that f(x) restricted to this domain is one-to-one. The largest possible domain is [-6,infinity) If the restriction function is written F, then

350. ## statistics

The heights of 10000 individuals are approximately normally distributed with a mean of 70 inches and a standard deviation of 3 inches. Find the probability that a person picked at random from this group will be between 65 and 74 inches tall.

351. ## AP PHYSICS

A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the

352. ## English

Does my thesis sound ok? Intelligence is a word that describes the ability of an individual to perform desired tasks well.

353. ## what is rule?

input 6 10 16 output3 5 8

354. ## math

explain whether each set is closed under the given operation {-1,0,1}multiplication?

356. ## Econ 103

Some of the negatives that Human Capital or ( 100 unemployed scientists who moved to your town) what effect would this have on your town. Bellingham, WA

357. ## Market Power

QuadPlex Cinema is the only movie theater in Idaho Falls. The nearest rival movie theater, the Cedar Bluff Twin, is 35 miles away in Pocatello. Thus QuadPlex Cinema possesses a degree of market power. Despite having market power, QuadPlex Cinema is

358. ## statistics

The heights of 10000 individuals are approximately normally distributed with a mean of 70 inches and a standard deviation of 3 inches. Find the probability that a person picked at random from this group will be between 65 and 74 inches tall.

359. ## substitution method

Solve by substitution method please help me solve this. I do not know how to do this at all. The question is 3x+8y=33 and x=31-6y I know that I have to plug x into the first x like 3(31-6y)+ 8y = 33 but i do not know what to do from there.

360. ## math

-3/4x + 1/4x= -6 how would I work this problem?

361. ## math

for the following equations, write a word problem draw a picture, and find the solution to the equation. 5/12 - 1/3=? I know the answer is 1/12 but am stumped on how to write the word problem and draw a picture

362. ## Econ 103

Consider 100 NASA scientists migrating to Bellingham with no jobs. How this would impact the city? will they create unemployment rate to go up or down? will they improve the life of others or compete away their wealth?

363. ## Science

What is an area without pressure called?

364. ## chemistry

Calculate the sodium ion concentration when 72.5 mL of 4.4 M sodium carbonate is added to 32.6 mL of 2.5 M sodium bicarbonate.

365. ## Math

She does sit-ups.The table shows how long it takes her to do different numbers of sit-ups. # of Sit-Ups | 10. | 30. |. 50. |. 200 | Minutes. |. 2. |. 6. |. 10. |. 40 | How long do you predict it will take her to do 120 sit-ups?

How do I work a problem like this? 5/8 + m = 1

367. ## physics

Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a

what number is 30 more than 432?

369. ## english

in act 3 of Mactbeth, what value does Macbeth put on his soul?

370. ## math

simplify the following expression x+4(y+8x) Write the property that justifies each step.

371. ## US History

10. Which best describes the Great Migration? a. the increase in European immigration during World War I b. the movement of African Americans to northern cities c. the movement of women into jobs formerly held by men d. the progress of Allied troops across

372. ## calculus

If a is a vector parallel to the xy-plane and b is a vector parallel to k, determine |a ~ b| when |a| = 3 and |b| = 2. 1. |a ~ b| = −6 2. |a ~ b| = −3ã2 3. |a ~ b| = 3 4. |a ~ b| = 3ã2 5. |a ~ b| = 0 6. |a ~ b| = −3 7. |a ~ b| =

373. ## Chem 110

Define of Standard solution

374. ## calculus

Find an equation for the surface consisting of all points P(x, y, z) equidistant from the point P(0, 1, 0) and the plane x = 3. Answer Choices: 1. y2 + z2 − 6x + 2y − 8 = 0 2. x2 + z2 + 6y − 2z − 8 = 0 3. y2 + z2 + 6x − 2y − 8 = 0 4. x2 + z2

375. ## science

Why might I see differing results for yeast grown in glucose vs sucrose. Is carbon dioxide produced when germinating peas are boiled?

Give an example of a monopoly found in South Africa

1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and that there are a total of 115

378. ## Algebra

If W1,w2,w3 are independent vectors, show that the sums V1=W2+W3, V2=W1+W3 and V3=W1+W2 are independent . (Write C1V1+C2V2+C3V3=0 in terms of the W¡¦s. Find and solve equation for the C¡¦s)

379. ## US History

26. What were the major factors which shaped American foreign policy in the period 1890 to 1900? Show how at least one of these factors influenced our actions in the Panama Canal controversy. Thanks -MC

380. ## accounting

from the following transactions state which account will be debited and which will be credited by filling up. S.No. Transactions Accounts involved Application Reason with respect to Rules of Debit and credit Sample Example Mr. X started business with cash

Please help me how you get the answer. PLEASE I NEED HELP. A triangle sail has a perimeter of 25 m. Side a is 2 m shorter than twice side b, and side c is 3 m longer than side b. Find the length of each side. Thank you ver much for helping me

382. ## Physics

The centers of a 13 kg lead ball and a 130 g lead ball are separated by 5.0 cm. What gravitational force does each exert on the other?

383. ## Chemistry

A solution of ethanol (C2H5OH) in water is prepared by dissolving 61.9 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?

384. ## Physics

A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular path?

385. ## physics

Give an example from daily life which shows that the celcius temperature scale is not an absolute temperature scale.

386. ## Biology

Why do we perform aerobic respiration when we're resting and both aerobic and anaerobic respiration while we're running?

387. ## chemistry

Saccharin (C7H5NO3S) is sometimes dispensed in tablet form. Ten tablets with total mass of 0.5797 g were dissolved in water. The solution was then oxidized to convert all the sulfur to sulfate ion, which was precipitated by adding an excess of barium

388. ## physics

Give an example from daily life which shows that the celcius temperature scale is not an absolute temperature scale.

389. ## spanish

Yo ____ está mejor o peor. a. no sé b. no sé si c. sé d. no lo sabía A?

390. ## math

input 6 10 16 output 3 5 8 2nd grade,what is rule? thanks

i have a project and its about genres and i would like to know what are five characteristics of realistic fiction? Thanks

392. ## Physics - inverse square law(check)

Two identical objects have charges from +6.0*10^-6 and -2.0*10^-6, respectively. When placed a distance d apart, their force of attraction is 2,0N. If the objects are touched together, then they moved to a distance of separation of 2d, what will be the new

393. ## French

I have to rewrite this following sentence replacing the direct object nouns with direct object pronouns. Elle monte l'escalier. How would you do it???

394. ## science

How does the human body respond to cuts/wounds on the body -- immune system response? What causes the change in the skin?

395. ## math

-1 divided by -2 2/7

396. ## Chemistry

We have 250. ml of He at 2.56 atm and 25 degrees C. What is the final volume if we heat the sample to 150 degrees C while we compress the volume to 100. ml

397. ## physics

A 4111.0 kg truck is parked on a 14.6° slope. What is the friction force on the truck?

9-5(-2=x)-3x

399. ## Chemistry

How many L of O2 are produced when 2.53 g of KClO3 (122.55g/mol) reacts at 0.934 atm and 354 K?

400. ## economics

suppose that demand increase by 10% and supply increase by 50%. what would you expect to occur in the market for the good?

401. ## physics

If a man weighs 853.0 N on Earth, what would he weigh on Jupiter where the acceleration due to gravity is 25.4 m/s2?

402. ## AP calculus

Find the equation of the normal to the curve f(x) = 3cos(2x) at the point x = 0. In class, we learnt to find the derivate of the function, which would represent the slope. After I did that, I found the slope to be 0.. but that is not what my graphing

403. ## social studies

what do econmics mean?

404. ## Math

What is the function that describes the sequence 1/2, 1, 3/2 and 2?

405. ## Math

Deborah deposits \$200 into an account that pays simple interest at the rate of 7%. How much will she have at the end of 4 months?

406. ## algebra help, please :)

The output of a function is 24 less than 9times the input write an equation for the function described. b) use your equation to find the input when the output is -10 Could someone help me? Thanks!

407. ## social studies

all northern states outlawed slavery by state constitution in 1820. what effect did this have on sectionalism in america?

408. ## History

-this was the second question -when FDR decided not to take part in helping the global depression, I was wondering why when the US withdrew from exchange-rate stabilization, how was this a bad thing for other countries? why couldn't they continue what they

409. ## Chemistry

Can anyone tell me why the answer that I got here is not correct? Pb(s) + AgNO3(aq) yields Ag(s) + PbNO3(s)

making big arrays