# Questions Asked onNovember 20, 2010

1. ## Chemistry

What is the only positive ion found in H2SO4(aq)? a. ammonium ion b. hydronium ion c. hydroxide ion d. sulfate ion The answer's b, but I don't understand why.

2. ## chemistry

calculate the molarity of each of the following solutions. Help!! (a) 0.36 mol of LiNO3 L of solution (b) 70.7 g C2H6O in 2.25 L of solution (c) 11.56 mg KI in 114.2 mL of solution

3. ## physics

an antifreeze solution is made by mixing ethylene glycol (density= 1116 kg/m^3) with water. suppose that the specific gravity of such a solution is 1.0730. assuming that the total volume of the solution is the sum of its parts, determine the volume

4. ## physics

Three vectors, A, B, C have the following x and y components: Ax = 6.7, Ay= -2.3; Bx = -5.5, By = 4.5; Cx = 3.2, Cy = 7.2. What is the magnitude of A + B + C ?

5. ## chemistry

A 47.7-g sample of SrCl2 is dissolved in 112.5 mL of solution. Calculate the molarity of this solution.

6. ## chemistry

A chemist wants to make 5.5 L of a 0.250 M CaCl2 solution, what mass of CaCl2 (in g) should the chemist use?

7. ## physics

An unclothed student is in a 27 degree Celsius room. If the skin temperature of the student is 37 degree Celsius, how much heat is lost from his body in 18 minutes, assuming that the emissivity of the skin is 0.91 and the surface area of the student is 1.7

8. ## physics

A rocket of mass 4.50 105 kg is in flight. its thrust is directed at an angle of 64.0° above the horizontal and has a magnitude of 7.50 106 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above the

9. ## Chemistry

At STP, a 7.49-gram sample of an element has a volume of 1.65 cubic centimeters. The sample is most likely (1) Ta (3) Te (2) Tc (4) Ti How do you get the answer?

10. ## Chemistry

Suppose that a 10-mL sample of a solution is to be tested for Cl- ion by addition of 1 drop (0.2mL ) of 0.15 M AgNO3 . What is the minimum number of grams of Cl- that must be present in order for AgCl(s) to form?

11. ## physics

A cup of coffee (with lid) is enclosed in an insulated cup 0.5 cm thick in the shape of a cube 9.7 cm on a side. The thermal conductivity of the cup is 0.0002 cal/s x cm x C. The temperature of the coffee is 71 degrees Celsius and the temperature of the

12. ## physics

two charges +1.2*10^-8 C and -1.6*10^-8 C are placed at the corners A and B of a right angled triangle ABC in which AB=3cm, AC=5cm. find the electric field at C.

13. ## math

solve the simultaneous equation 2x+2y=7 x^2-4y^2=8

14. ## Computer Programing & Logic Design

Submit pseudocode and a flowchart for the following programming exercise: Test Average and Grade Write a program that asks the user to enter five test scores. The program should display a letter grade for each score and the average test score. Design the

15. ## college physics helpasap

The water skier in the figure is at an angle of 35degree with respect to the center line of the boat, and is being pulled at a constant speed of 15m/s . 1)If the tension in the tow rope is 90.0N, how much work does the rope do on the skier in 30.0s ? 2)How

16. ## Chemistry

If you mix 40.0 mL of a 0.389 M solution of K2CrO4 with 40.0 mL of a 0.389 M solution of AgNO3, what mass of solid forms?

17. ## physics

A heavy ball A of mass 10kg is moving at a velocity of 10m/s to the right. When it hits a stationary ball B of mass 5kg, ball B moves at a velocity of 10m/s to the right. a) explain whether it is inelastic collision or not.

18. ## Finance

Kilsheimer Company just paid a dividend of \$ 4 per share. Future dividends are expected to grow at a constant rate of 6% per year. What is the value of the stock if the required return is 12 %?

19. ## physics

Years ago, a block of ice with a mass of about 22kg was used daily in a home icebox. The temperature of the ice was 0.0 degrees Celsius when delivered. As it melted, how much heat did a block of ice that size absorb? The latent heat of fusion of water is

20. ## Reaction rates

The reaction, C2H5Br --> C2H4 + HBr, has a rate constant k = 0.0000100 s-1 at 363 °C and k = 0.000479 s-1 at 427 °C. What is the rate constant for the reaction at 725 K? Round your answer to 3 significant figures.

21. ## Spanish

38. "_______" "Ramon, Esteban y Teodora." a. ¿Cómo son? b. ¿Cómo se llama? c. ¿Cómo te llamas? d. ¿Cómo se llaman? D? 39. Mi perro es guapo; _____ ojos son negros. a. sus b. tiene c. su d. mis A 40. La amiga de mi abuela tiene ____ años. a.

22. ## math

An artisan can sell 120 garden ornaments per week at \$4 per ornament. For each \$0.50 decrease in price, he can sell 20 more ornaments. a) determine algebraic expressions for the price of a garden ornament and the number of ornaments sold. b) write an

23. ## Early childhood

1.withdrawing or withholding reinforcement 2.incompatible behaviors 3.catch the child being good 4.reminder,redirection,reprimands could someone give me example of how this relates to the developmental-behavioral approach

24. ## chem

is An antacid neutralizes stomach acid. a chemical reaction?

if 478 watts of power are used in 14 seconds, how much work was done?

26. ## Chemistry

A quantity N2 of occupies a volume of 1.4L at 290K and 1.5atm . The gas expands to a volume of 3.1 L as the result of a change in both temperature and pressure. I have the find the density of the gas at these new conditions?

27. ## English

There is a host of reasons... or There are a host of reasons.... Which is correct?

28. ## physics

Q 2) A particle executes simple harmonic motion with an amplitude of 10 cm. At what distance from the mean position are the kinetic and potential energies equal ?

29. ## Earth Science

What are the sequences of weather events a city goes through when an idealized, middle latitude,mature cyclone that hasn't developed an occluded front passes over it. Assume the center of the wave cyclone passes, west to east, at 150 to the north of the

30. ## Computer Programing & Logic Design

Submit pseudocode and a flowchart for the following programming exercise: Largest and Smallest Design a program with a loop that lets the user enter a series of numbers. Theuser should enter -99 to signal the end of the series. After all the numbers have

31. ## ENGLISH

Did I use the word sublimate correctly in the following sentence? "His stories served as a way to sublimate his anger for his childhood and improve the conditions for nineteenth-century adolescence."

32. ## Chemistry

When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55 deg C. one company has patented a non-CFC propelled aerosol that can be sprayed inside a vehicle to reduce the temperature to 25 deg C within seconds. the

33. ## Physics

if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass? i really need like, step by step help please? asap. thanks, michelle . physics - bobpursley, Saturday, November 20, 2010 at 4:06pm power= work/time=

34. ## Math

The side length,s, of a cube is related to its volume, v, by the formula s=v^1/3. A cube box when filled with materials has a volume of 729 cm2. What is the side lenth of the cube box used? Please help me step by step with this. I don't know where to start

35. ## world geography

can anyone help me compile a list of facts about all the continients

36. ## physics

50.0 kg stoplight hangs from wire over middle of an intersection. wire makes 15 degree angle with horizontal. find tension in each end of the wire

37. ## physics

How hard would you have to push a snow shovel over the sidewalk if you wanted to maintain a constant velocity if the shovel had a mass of 12 kg and the coefficient of friction between the sidewalk and the shovel was 0.33?

38. ## Cognitive psycology

o Define language and lexicon. o Evaluate the key features of language. o Describe the four levels of language structure and processing. o Analyze the role of language processing in cognitive psychology

39. ## chemistry

This question has three paarts: 1. Determine the mass of water formed when 14.5L NH3 (at 298K and 1.5 atm) is reacted with 19.3 L of O2 (at 321K and 1.2 atm) 4NH3+O2-->4NO+6H2O I got the answer of 19 g H2O 2.What are the partial pressures for all gases

40. ## hcr220 college

I have done my cms 1500 form but I want to make sure that I did it correctly. Here it goes: i tried to post it but it will not allow

41. ## history

1. Nixon's policy regarding Vietnam was: a. very popular. b. becoming very unpopular, particularly among Senators. c. becoming increasingly unpopular among ordinary voters, but the president and Congress generally ignored these concerns. I'm undecided

If 7 out of 11 ballons are red, what fraction of ballons are not red?

43. ## physics

how long does it take to do 432 joules of work with 75 watts of power?

44. ## french

I need a paragraph telling about myself but i need someone to check it for me. Bonjour mis amis. Je m'applle lisa. Je suis vingt ans. Mon couleur preferee est le bleu. Mon saison preferee est l'automne. Je suis drole, actif, et intelligent. J'ai un

45. ## math

Slope the Intercept form of the Equation....y-y1=m(x-x1) (3,-2) m=-6/5 (8,-8)

46. ## College Chemistry

How many milliliters of 1.55 M NaOH must be added to 125 mL of .19 M NaH2PO4 to make a buffer solution with a pH of 6.90? I have attempted to solve this with no success, as this is an online homework assignment that requires an exact answer. Hoping that

47. ## Math (Calc 1)

Consider a window the shape of which is a rectangle of height h surmounted a triangle having a height T that is 1.3 times the width w of the rectangle (as shown in the figure below). (pictures of a pentagon) If the cross-sectional area is A, determine the

48. ## Chemistry

Why, in terms of atomic structure, is the radius of an Na atom larger than the radius of an Na+ ion?

49. ## chemistry

What is the rate of the following reaction (M/s) if the rate constant for the reaction is 0.500 L•mol-1•s-1 and the concentration of each reactant is 0.0628 M. (The units for the rate constant depend upon the rate law). CO + NO2 --> CO2 + NO

50. ## chemistry

If 4.0 L of a 4.9 M SrCl2 solution is diluted to 40 L, what is the molarity of the diluted solution?

51. ## Concentration and Reaction

The rate of the following reaction: Radioactive decay of 90Sr, is characterized by the rate constant k = 0.024 year-1. What is the half-life (in years) for this reaction at the same conditions when the initial concentrations are 0.0356 M? (Round your

52. ## chemisty

what is the molarity of ZnCl2 that forms when 30.0 g of zinc completely reacts with CuCl2 according to the following reaction? Assume a final volume of 285 mL. Zn(s) + CuCl2(aq)--> ZnCl2(aq) + Cu(s)

53. ## Early childhood

#2 Discuss the following concepts and provide an example for each as it relates to th dvelopmental-behavioral approach

54. ## analytical chemistry

How much ammonium sulfate should be added to 500mL of .30M ammonia to make a buffer with a pH 9.0?

55. ## physics

A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x

56. ## Astronomy

The apparent brightness of a Cepheid variable star in a far-away galaxy is measured to be 640,000 times fainter compared to an equivalent star 2,000 light years away from the Sun in our Galaxy. Assuming that there is no light absorption between galaxies,

57. ## ethics

Where would you find a "normative" organizational culture?

58. ## Early childhood

#3 Discuss the following concepts and provide an example for each as it relates to th dvelopmental-behavioral approach when it comes to sit nd watch and time-out

59. ## pomona

Can a hypothesis test yield a statistically significant (say p

60. ## chemistry

What products would you expect from acid-catalyzed hydration of the following alkenes? a. propene b. 2-methylpropene

61. ## statistics

How is the p-value of a hypothesis test related to type I and type II error?

62. ## college chemistry

Which of the following would make the best buffer solution and explain. HF and NaF or NaC2H3O2 and CH3COOH

63. ## Math

If Betsy leaves Town A traveling due east for 6 miles to Town B, then turns due north and travels 9 miles to Town C, how far will her trip home be to Town A as she travels directly southwest?

64. ## Math

If Betsy leaves Town A traveling due east for 6 miles to Town B, then turns due north and travels 9 miles to Town C, how far will her trip home be to Town A as she travels directly southwest?

65. ## Financial Math

Initial deposit of \$1100.00 on June 1. APR of 2.0%. What is the amount of interest earned on December 31? What is new balance?

66. ## chem

I got through the first part easily, got -352.9kJ Having trouble with the second part "The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. The source of energy in the heater is shown below. Mg(s) + 2 H2O(l) Mg(OH)2(s) + H2(g)

67. ## physics

Two fan carts with different fan speeds and different accelerations are started from rest some distance from one another. Cart A begins at position 0 with a velocity of zero and an acceleration of aA to the right. Cart B begins at position xB with a

68. ## organic chemistry

What is the major product when 2-methyl-1-butene is treated with BrF. Explain your answer.

69. ## Biology

What is the targeting pathway from translation until the protein reaches it's final functional destination for PFK and insulin? Choose from the following choices for each: a) golgi -> ER -> outside of cell b) ER -> golgi -> cytoplasm c) cytoplasm only d)

70. ## chemistry (combustion and heat)

How much heat is evolved when 5.00g of propane C3H8 burns completely. I got the formula down, now what? C3H8 + 5O2 -> 3CO2 + 4H2O

71. ## finance

Firm L has debt with a market value of \$200,000 and a yield of 9%. The firm's equity has a market value of \$300,000, its earnings are growing at a 5% rate, and its tax rate is 40%. A similar firm with no debt has a cost of equity of 12%. Under the MM

72. ## Algebra 2/Math

Can you check these thanks. Solve the system by substitution or elimination. 2x+y=1 3x-y=14 Answer: (3,5) x-3y= -12 2x + 11y= -7 Answer: (39,17) 4x+2y=8 12x+6y=24 Answer: no solution 4x-2y=5 2x-y= -1 Answer: no solution 4a+3b =6 8a-b= -9 Answer: no

73. ## physics

Spending a long time in weightlessness is unhealthy. One of the most important negative effects experienced by astronauts is a loss of muscle and bone mass. Since an ordinary scale won’t work for an astronaut in orbit, what is a possible way of

74. ## statistics

i have a question regarding statistics. i just don't know how to do it and would really appreciate if someone could tell how i can solve it. the question is; a population of scores contains exactly 5 scores : 2, 3, 6, 8, 11 a) there are 5x5=25 different

75. ## Chem

A scuba diver creates a spherical bubble with a radius of 4.0 at a depth of 30.0 where the total pressure (including atmospheric pressure) is 4.00 . What is the radius of the bubble when it reaches the surface of the water? (Assume atmospheric pressure to

76. ## ESL

How is the ELL Proficiency Standards similar as well as different to the Arizona Language Arts Academic Standards?

77. ## Physics

Trying to beat the heat of summer, a physics grad student went to the local toy store and purchased a child's plastic swimming pool. Upon returning home, he filled it with 154 liters of water at 25°C. Realizing that the water would probably not be cool

78. ## physics

if 478 watts of power are used in 14 seconds, how much work was done?

79. ## geometry

in triangle PQR ~ -- ~ -- if m

80. ## Chemistry

A scuba diver creates a spherical bubble with a radius of 4.0cm at a depth of 30.0m where the total pressure (including atmospheric pressure) is 4.00 atm. What is the radius of the bubble when it reaches the surface of the water? (Assume atmospheric

81. ## physics

if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass? i really need like, step by step help please? asap. thanks, michelle .

82. ## geometry

in triangle PQR,line segment PQ is = and congruent to line segment QR. if m

83. ## ALgebra word problem

a coffee shop sells a cup of espresso for \$2.00 and a cup of cappuccino for 2.50. on friday, rachel sold 30 more cups of cappuccino than espresso, and she sold \$178.50 worth of espresso and cappuccino together. how many cups of each were sold?

85. ## physics

Two fan carts with different fan speeds and different accelerations are started from rest some distance from one another. Cart A begins at position 0 with a velocity of zero and an acceleration of aA to the right. Cart B begins at position xB with a

86. ## physics

The water skier in the figure is at an angle of 35degree with respect to the center line of the boat, and is being pulled at a constant speed of 15m/s . 1)If the tension in the tow rope is 90.0 , how much work does the rope do on the skier in 30.0 ? 2)How

87. ## Chemistry

The retina of a human eye can detect light when radiant energy incident on it is at least 4.0x10^(-17)J. For light of 535nm (5.35x10^(-7) m) wavelength, how many PHOTONS does this energy correspond to?

there are 3500 species of bees and more than 600,00 species of insects. how many insects are bees. write an inequlity.

89. ## graphing linear equatios

I am really confused...can someone help me with this? I am supposed to graph solution of given system of linear inequality: y is greater than 4x-3 y is less than or equal to x+2

90. ## Math

[w^1 / w^-3] = w3 ? is this correct?

91. ## Math

4x^3y^-2 / 2x^-1y^4 is the answer: 2x^4y^-6 ?

92. ## Math

A colony of bacteria increases according to the law of unihabited growth. a) If the number of bacteria doubles in 5 hours, find the function that gives the number of cells in the culture. I have the answer to this one. It is N=No e ln2/5 (t) b) If there

93. ## chemistry

how to balance chemical equations

94. ## Chemistry

Suppose that a 10-mL sample of a solution is to be tested for Cl- ion by addition of 1 drop (0.2mL ) of 0.15 M AgNO3 . What is the minimum number of grams of Cl- that must be present in order for AgCl(s) to form?

95. ## Chemistry

Calculate the pH at the equivalence point in titrating a 0.120 M solution of NaHCrO4 (sodium hydrogen chromate) with 7.0×10−2 NaOH.

96. ## Math

A bone is found to have 45% of the original amount of carbon 14. If the half life of carbon is 5600 years, how old is the bone. Would I use the formula N=No e^kt?

97. ## algebra

During the first part of a rip a canoeist travels 43 miles at a certain speed. The canoeist ravels 19 miles on the seond part of the trip at a speed 5 mph slower. The total time for the rip is 2 hours. What is the speed on each part of the trip?

98. ## VB 2008 Programming

HELP!!!! I'm not sure How to get started nor the steps to design this project. The file MEMBERS.TXT contains the names of the 100 members of a club. Write a program to randomly select people to serve as President, Treasurer, and Secretary. Note: A person

99. ## US history multiple choice

1. Lydon Johnson's ultimate reaction to public opinion regarding the Vietnam War was to: A. run on his growing popularity. B. not seek reelection because he was so popular. C. admit an error and lower the number of troops in Vietnam. D. not seek reelection

100. ## algebra

how can 2 boys weighing 100lbs each and a man weighing 200lbs cross the river in a boat that only holds 200lbs safely?

101. ## English

The packet of biscuits has passed its expiry date or The packet of biscuits has past its expiry date. Or both sentences correct?

102. ## chemistry

What can we use to put out a fire that involves sodium or any alkali metals. I know we can't use water as sodium reacts violently with water, then what else can we use?

103. ## physics

a dog sits 1.34m from the center of a merrygo round with an angular speed of 1.26rad/s. if the magnitude of the force that maintains the dog's circular motion is 43.8N, what is the dog's mass? answer in units of kg?

Hi I know this isn't on the subjects or anything but how do I improve my grades in geography class

105. ## Chemistry

Which has the higher [H+], 0.40 M RbOH or 0.20 M Ca(OH)2?

106. ## Physics/chem

Trying to beat the heat of summer, a physics grad student went to the local toy store and purchased a child's plastic swimming pool. Upon returning home, he filled it with 154 liters of water at 25°C. Realizing that the water would probably not be cool

107. ## English

Discuss how you see the theme of creating art developing in stories and poems.

108. ## physics

In 8.6 s a fisherman winds 2.7 m of fishing line onto a reel whose radius is 3.0 cm (assumed to be constant as an approximation). The line is being reeled in at a constant speed. Determine the angular speed of the reel.

109. ## chemistry

why is dilute nitric acid not used in manufacture of hydrogen sulphide instead of dilute sulphuric acid?

110. ## trig

graphs of trignometry

111. ## English

1. A cow can make about 12kg of waste in a day. ( Is a cow a female? Can a cow mean both male and female ones? What about in this sentence?)

112. ## physics

Posted by michelle quendarsv on Saturday, November 20, 2010 at 3:55pm. if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass? i really need like, step by step help please? asap. thanks, michelle . physics - bobpursley,

113. ## chemistry

The magnesium ion has an electron configuration like that of which noble gas?

114. ## PHYSICS

A 0.49 kg object is attached to a spring with a spring constant 167 N/m so that the object is allowed to move on a horizontal frictionless surface. The object is released from rest when the spring is compressed 0.12 m. Find the force on the object.

115. ## ICD classification reimbursement

what are the four main steps that should be followed to make sure that the code is an accurate description of the diagnosis

116. ## PHYSICS

A 0.181 kg mass is attached to a spring and executes simple harmonic motion with a pe-riod of 0.21 s. The total energy of the system is 1.2 J. Find the force constant of the spring. b) Find the amplitude of the motion.

117. ## physics

A 95.5 g mass is attached to a horizontal spring with a spring constant of 11.2 N/m and released from rest with an amplitude of 35.8 cm. What is the velocity of the mass when it is halfway to the equilibrium position if the surface is frictionless? Answer

118. ## Math

[w^1 / w^-3]^-4 = w3 ? is this correct?

119. ## HSM220

How do I concider the 1000 students in my matrix budget?

120. ## physics

Consider a simple haemonic motion of time period T . Calculate the time taken for the displacement to change value from half the amplitude to the amplitude.

121. ## Thanks on thanksgiving

With all the help you did for me i want to give a treat. here are some thanksgiving poems I found. Thank You For Inviting Us Thank you for inviting us To your Thanksgiving dinner. A day spent in your company Is invariably a winner. Thank you for the time

122. ## physics

In a panic stop, a 109 ton train can slow down with an acceleration of 0.08 g's. What is the time required to stop a train from a speed of 53 mph?

123. ## fin571

B1. (Choosing financial targets) Bixton Company’s new chief financial officer is evaluating Bixton’s capital structure. She is concerned that the firm might be underleveraged, even though the firm has larger-than-average research and development and

124. ## Physical Science

force of a toy jeep if the mass=50kg & is traveling at 4m/s& the radius is 50 centimeters.

125. ## Physical science

determine the velocity of a toy jeep if it has a distance of 80 meters and a time of 8 seconds?

126. ## chem class

What is the pH of an aqueous solution at 25° that contains 3.98 × 10-9 M hydronium ion?

127. ## Physical science

Acceleration is F/S A=F/M this is: direct inverse not sure both direct &inverse

128. ## I don't know what Subject!!

Why do we celebrate Thanksgiving Day?

129. ## physical science

change 85 kilograms to grams change 45 meters to centimeters change 70 nanometers to meters

130. ## Algebra

5x+2y=-11, 7x-3y=13, find x and y

131. ## math

[w^1 / w^-3]^-4 = w3 ? is this correct?

132. ## statistics

Machines are used to pack sugar into packets supposedly containing 1.20 kg each. On testing a large number of packets over a long period of time, it was found that the mean weight of the packets was 1.24 kg and the standard deviation was 0.04 Kg. A

Could you please help me with this question: A diver dives from the 3 m board at a swimming pool. Her height, y, in metres, above the water in terms of her horizontal distance, x, in metres, from the end of the board is given by y= -x2 + 2x + 3. What is

134. ## Math

Hi Sorry I'm reposting this question, I think the answer that was provided was not correct because of the ambiguity of the original question but if I could have someone workout the question as written it would be much appreciated: See below discussion.

135. ## physics

Two fan carts with different fan speeds and different accelerations are started from rest some distance from one another. Cart A begins at position 0 with a velocity of zero and an acceleration of aA to the right. Cart B begins at position xB with a

136. ## Math

estimate a 15% tip on a \$42.65 check

137. ## physics

Posted by michelle quendarsv on Saturday, November 20, 2010 at 5:26pm. Posted by michelle quendarsv on Saturday, November 20, 2010 at 3:55pm. if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass? i really need like, step

138. ## PHYSICS

Indentify the direction of the netforce in each of the following situations. A marble moves in a circular path inside a paper plate at a constant speed. The moon orbits the earth. An air hockey puck moves smoothly across the air hockey table after being

139. ## Statistics

Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking¡ªeven if they are not exposed to the usual pattern

140. ## Statistics

Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking¡ªeven if they are not exposed to the usual pattern

141. ## social studies

How do elections in a single-member district differ from elections in states that fill their seats at-large?

142. ## CHEMISTRY

what is the volume of oxygen gas at stp from decompostion of 10.8 meruric oxide

143. ## chemistry

Determine the mass of water formed when 14.5L NH3 (at 298K and 1.5 atm) is reacted with 19.3 L of O2 (at 321K and 1.2 atm) 4NH3+O2-->4NO+6H2O

144. ## english

I wrote this for my class and I just want to make sure I have it right. The role of education plays a very big part in the financial world. It's a big part of becoming successful. It can help with learning basic math skills in order to better your

145. ## chemistry

Three gases (8.00 of methane, 18.0 of ethane, and an unknown amount of propane, were added to the same 10.0-L container. At 23.0 C , the total pressure in the container is 3.60 atm. Calculate the partial pressure of each gas in the container.

146. ## English

Can some one proof read my short essay for gramatical errors, or just the anything in general. heres the question i am answering: Popular media from magazines to movies to television offer images, stories, and information that influence our prejudices and

147. ## Chemistry

Calculate the pH at the equivalence point in titrating a 0.120 M solution of NaHCrO4 (sodium hydrogen chromate) with 7.0×10−2 NaOH. Please help!

148. ## physics

A football on the moon (1/6 earth's gravity) is kicked straight up with an initial velocity of +14.5 m/s. If it starts 2.7 m above the surface, how much time has passed until it is 16.8 m above the surface and on its way down?

149. ## Macroeconomics

You want to start a company, and are trying to decide between two different industries. You are doing your final research before you write your business plan. Industry A has 20 firms and a Concentration Ratio (CR) of 20% * What is the name for this type of

150. ## Physics

if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass? i really need like, step by step help please? asap. thanks, michelle . physics - bobpursley, Saturday, November 20, 2010 at 4:06pm power= work/time=

151. ## US History

Evaluate the administrations of Presidents Hayes, Garfield, Arthur, Cleveland, and Harrison in reference to their conceptions of the office and the use of executive power.

152. ## Chemistry

The molar solubility of lead iodide is 1.45*10^-3M at 20 degrees C and 6.5*10^-3M at 80 degrees C . What are the values of delta H not and delta S not for dissolution of PbI2 ? PbI2(s) ---> Pb2+(aq) + 2I- (aq) You may assume that delta H and delta S are

153. ## chemistry

What are the partial pressures for all gases in 4NH3+O2-->4NO+6H2O that remained at the end, if the reaction took place in a sealed 50.0L tank and the final temperature is 345K?

how do i subtract intergers

asked by oh noes he didnt
155. ## geography

What is the significance of this and what are the consquences. I don't understand the world of economics. Maybe a little help to get started. Thank you. Canacol Energy, an oil firm listed in Toronto and Bogota has a goal to increase its output to 35,000

is there a way i can be one step ahead of my teachers so im never behind

asked by the hat is back
157. ## health management

As a healthcare manger what two strategies would you consider to help build internal and external relationships that could benefit your organization?

158. ## Health ins

Course project,to research a healthcare facility How do i write a Outline

159. ## college

I need to write a net ionic equation for Sr{2+}+ Hg2 + NaCL =

160. ## sociology

How can the three sociological perspectives (e.g., social functionalism, social conflict, and symbolic interaction) be used to conceptually understand social deviance?

161. ## CHEM

a 3 liter flask at 25 C is filled with a mixture of N2 AND O2 to a total pressure of 8 atm, there were 10 grams of N2. How many grams o2 were present?

162. ## algebra

5y/12-y-3/6=2y-1/2

163. ## Spanish 1

46. Mañana voy al parque con _________ abuelos. a. ochenta años b. mi c. mí d. mis B 47. "¿Quién está es casa?" "No hay _______." a. gemelos b. cuántos c. nadie d. personas pelirrojas Not sure... 48. As in the United States, hyphenated surnames are

164. ## West virginia mining accident.. can someone help

What does orgaizational leadership have to do with the WV mining accident?

165. ## trig

In ΔXYZ, ∠X=47° and ∠Y=29°. ∠XWZ=90° and XY=3.9. Find the length of WY to the nearest 100th.

166. ## Math

I posted these 2 questions a couple of days ago and although the help I received would have been more appreciated if it didn't come with an underhanded comment, I did see where I made my mistake with the first question, however I would like to know with

167. ## ALGEBRA

I need to find a slope and y intercept of the line and write the fractional answers in lowest terms. 2y+8x+3=12+8x; I would like to try this one and get your input. 2y+8x-8x-12-3; 2y/2 = 9/2; y = 9/2 however I did not find the slope. I don't think there is

168. ## college chemistry

I need to understand how to make a net ionic equation using the following elements: Sr++, Hg2, NaCl Or these: NH4, Ca++, K2SO4 I was not given the products of the reactions.

169. ## health,safety and nutrition

Why health, safety and nutrition strategies are important ti identify and practice in an early childhood education programs.

171. ## chemistry

What is the pH of an aqueous solution at 25°C in which [H+] is 0.025 M?

172. ## comp

what is the verb tense in this sentence? Education is contributing a good role of successful financial planning.

173. ## Science

What salts are there within potato cells and what percentage of salts are there in them?

174. ## CHEM

a cyinder with a volume of 5.37 liters contains N2 at a pressure of 2.82 atm at 26 celcius. how many grams Ne must be added to raise the total pressure to 7.5 atm

175. ## algebra

How can I find the equation in standard form using only integers for the line through (-1,-3) and (2,-1)?

176. ## English 12

Okay, for English 12 im doing a semiar on Yann Martel's book, "Life of Pi" The topic of my essay is "martel depiction of Canada and India= the role of setting" My main body paragraphs are Setting in Canada Setting in India Setting in the Ocean what im

177. ## Literature/short story,2

An author's purposein using rhetoric is to?

178. ## Composition and Communication I

write a one paragraph analysis of about 150 words, in which you do the following: oIdentify which of the two selected paragraphs was more effective, focusing on the writing elements rather than the opinions presented. oAnalyze why one paragraph was more

179. ## physics

Spring scale A is attached to the floor and a rope runs vertically upward, loops over the pulley, and runs down on the other side to a 99 N weight as shown (in original problem). Scale B is attached to the ceiling and the pulley is hung below it. What are

180. ## Math

1.A job hotline service charges \$25 plus a 4% commission c on the first month of earnings if it finds work for a client. Write an equation that represents the total cost T to find a job through the hotline. What is the cost if a client earns \$1500 the

181. ## College Algebra

Problem: In certain signal detection problems (e.g. radar or sonar) the probability of false alarm (FA) (i.e., of saying that a certain signal is present in the data when it actually is not) is given by: ∞ pFA = ∫ _______1_______ x^p/2-1 e-x/2 dx η

182. ## Spanish

27. No es mi carpeta. La carpeta es _________ Susana. a. con b. en c. de d. mas o menos C 28. Yo tengo quince años. Mi hermana es mayor. Ella _________. a. tiene veinte años b. tiene catorce años c. es profesora también d. tiene amigos que son

183. ## Anatomy

Why is it helpful for our sense of smell to adapt rapidly?

184. ## EDU310

What are the major issues that perpetuated the evolution of the American education system in the United States? How did they impact the changes that have taken place?

185. ## US history multiple choice

1. The staff of President Nixon: A. demonstrated how much the government had grown in the previous fifty years. B. was not as large as it should have been, but it allowed Nixon to exert as much control over each person as possible. C. was generally a group

186. ## chem class

What is the pH of an aqueous solution at 25°C in which [OH-] is 0.025 M?

187. ## Early childhood

Sit and watch and time-out what are some example that relates to the developmental-behavioral approach help.

188. ## Math- pplication of Sin and Cos&thier derivative

An oceanographer measured a set of sea waves during a storm and modelled the vertical displacement of waves in meters using the equation h(t)=0.6cos2t+0.8sint, where t is the time in seconds. a) Determine the vertical displacement of the wave when the