# Questions Asked onOctober 2, 2016

1. ## math (stats)

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. [Round your answers to three decimal places, for example: 0.123] Compute the

2. ## Math

Match the inequality to its graph. Graph A. less than or equal to -1 Graph B. less than 3 Graph C. less than 1 Graph D. less than or equal to -3 7. 4y + 3 *less than or equal to* y+6 8. -2y > 2 9. y over 3 < -1 10. 3y *less than or equal to* 2y +3 Not

3. ## Social Studies

Explain how the civic virtues of the ancient Romans inspired the founding fathers' vision of how citizens should conduct themselves in the United States? Anything helps, a website, something. Social studies isn't my strongest subject. Thanks!

4. ## Chemistry

Identify the oxidation-reduction reactions among the following: 1. Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) 2. 2Na(s) + Cl2(aq) → 2NaCl(s) 3. 2Mg(s) + O2(g) → 2MgO 1 and 2 only 2 and 3 only 1 and 3 only All of 1, 2, and 3 None of 1, 2, and 3

5. ## Math (Limits)

What is the limit of g(x)=x as x approaches pi? Would it just be pi??

6. ## Physics 12

A 62 kg rock climber is attached to the rope that is allowing him to hang horizontally with his feet against the wall. The tension in the rope is 7.1x10^2 N,and the rope makes an angle of 32 degrees with the horizontal.Dtermine the force exerted by the

7. ## Chemistry

can you please please help me with these questions I don't know how to do any of them. I know how to calculate moles and grams and mole ratio,etc but I don't understand the limiting excess reactant and yield stuff. Thanks! 1.In the following chemical

8. ## CHE 111-03L

The following system is at equilibrium: 2X(s)+4Y(g)⇌Z(g) Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction. Half the Volume Remove Some X Double the Volume

9. ## Physics

A block slides down a frictionless plane having an inclination of θ = 13.2°. The block starts from rest at the top, and the length of the incline is 1.70 m. -> Find the acceleration of the block. (m/s2 down the incline) -> Find its speed when it reaches

10. ## algebra

Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms. 2 – 11x^2 – 8x + 6x^2 A. –5x^2 – 8x + 2; quadratic trinomial B. –5x^2 – 8x; quadratic binomial C. –6x^2 – 8x – 2; cubic polynomial D.

11. ## Chemistry

Calculate the amount of energy released in the formation of one mole of MgSe bonds (not lattice energy). The radius of the magnesium ion is 0.65 Å, and the radius of the selenide ion is 1.98 Å. Note that 1Å=10^−10m. I know I need to use the formula

12. ## Physics

You're driving parallel to train tracks at 40.0 km/h when a train passes you, going a steady 105 km/h. A track crossing is up ahead, so you begin to speed up at 6.50 m/s2. How far do you drive before you pass the train?

13. ## math

S = 2πr2 + 2πrh solve for h H=S-2πr/2πr?

14. ## Science

The fastest growing plant on record is the hesperoyucca whipplei suppose a plant of this type grows 2.5 m in 14 days, what is the growth rate in micrometer per second?

15. ## value

THE BASE OF A TRIANGLE IS 3CM LONGER THAN ITS CORRESPONDING HEIGHT. IFTHE AREA IS 44CM^2. FIND THE LENGTH OF ITS BASE

16. ## Data Probability

A certain virus infects one in every 300 people. A test used to detect the virus in a person is positive 80% of the time if the person has the virus and 5% of the time if the person does not have the virus. (This 5% result is called a false positive.) Let

17. ## Can someone help me please I've tired this problem

A certain virus infects one in every 300 people. A test used to detect the virus in a person is positive 80% of the time if the person has the virus and 5% of the time if the person does not have the virus. (This 5% result is called a false positive.) Let

18. ## math

Write a compound inequality that each graph could represent

19. ## Physics

An electron of mass 9.11 10-31 kg has an initial speed of 2.60 105 m/s. It travels in a straight line, and its speed increases to 6.00 105 m/s in a distance of 4.40 cm. Assume its acceleration is constant. (a) Determine the magnitude of the force exerted

20. ## AP physics

According to the equation a=bc what type of relationship (direct or inverse) exerts between the quantities A and C? Draw a qualitive graph to describe the relation between A and C. Assumeing B is constante.

21. ## Chemistry

To prepare a solution of NaCl, you weigh out 2.634 (0.002)g and dissolve it in a volumetric flask whose volume is 100.00 (0.08) mL. Express the molarity of the solution, along with its uncertainty.

22. ## Algebra

Suppose that a cyclist began a 390 mi ride across a state at the western edge of the state, at the same time that a car traveling toward it leaves the eastern end of the state. If the bicycle and car meet after 6.5 hr and the car traveled 32.4 mph faster

23. ## Chemistry

Calculate the amount of energy released in the formation of one mole of MgSe bonds (not lattice energy). The radius of the magnesium ion is 0.65 Å, and the radius of the selenide ion is 1.98 Å. Note that 1Å=10^−10m. I know I need to use the formula

24. ## Chemistry

Ammonia (NH3) reacts with oxygen to produce nitric oxide (NO) and water (see balanced equation below). How many grams of oxygen do you need to react with 21.4 g ammonia? __4_NH3 + __5_O2 → __4_NO + _6__H2O

25. ## CHEMISTRY

calculate the weight of co2 by complete combustion of 1.5 \g of ethane

26. ## chemistry

A 1.60 g sample of a mixture of naphthalene, C10H8, and anthracene, C14H10, is dissolved in 20.0 g benzene, C6H6. The freezing point of the solution is 2.81oC. What is the composition as mass percent of the sample mixture?

27. ## calculus

Find the dimensions of the rectangle of maximum area A that can be inscribed in the portion of the parabola y^2=4px intercepted by the line x=a. heres another problem pls help Damon!!! Graph it if possible

28. ## physics

A stone is dropped from a 100m bridge. How long does it take the rock to reach the ground?

29. ## English

What symbols are present in the poem Did I Miss Anything by Tom Wayman and what do they represent?

30. ## physical science

a car travels 50km east in 30 mins. what is the velocity in km/h

31. ## Physics

Two blocks, each of mass m = 3.35 kg are hung from the ceiling of an elevator as in the figure below. (a) If the elevator moves with an upward acceleration a with arrow of magnitude 1.7 m/s2, find the tensions T1 and T2 in the upper and lower strings. T1 =

32. ## Math

2cups of water to 3 cups of flour give equivalent ratios

33. ## physics

In these figures, we see a boy named Billy riding a carnival ride called the Rotor and the free-body diagram for the forces acting on him. What must be the magnitudes of the vectors (f)wall,Billy and (W)Earth,Billy if Billy remains at the same height along

34. ## Probability

A certain disease has an incidence rate of 0.6%. If the false negative rate is 5% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the disease.

35. ## Math

Ravi bought a leather Coat costing Rs. 900 at Rs.990 after paying the VAT charged on the coat.

36. ## unt

A coin is tossed 9 times. What is the probability of getting all heads? Express your answer as a simplified fraction or a decimal rounded to four decimal places.

37. ## Physics

The passengers in a roller coaster car feel 1.60 times heavier than their true weight as the car goes through a dip with a 24.0 m radius of curvature. What is the car's speed at the bottom of the dip? Which equation do I use? V= 2(pi)r/t = 2(pi)rtf = wr

38. ## computer science java

write a program in java for a grocery (fruit shop calculate the prize of bananas @ \$.89/kg declaring the the prices of all either as instances or class variables.declare the weight of the fruit as local variables

39. ## Counting Method

A company has 11 male and 10 female employees, and needs to nominate 2 men and 2 women for the company bowling team. How many different teams can be formed?

40. ## Chemistry

What mass of Na2S is produced when 20g of sodium reacts with excess sulfur?

41. ## science

an incident ray makes an angle of 20 degree with the plane mirror.what would be the measure of angle of reflection?

42. ## Physics

I don't need somone to fully answer this questions, but I need help as to where to get started. Occasionally a severe leg break requires traction to help the bones heal properly. While in traction, the leg is held stationary in the air and is under tension

43. ## Chemistry

The mass of potassium iodate (KIO3) contained in an impure sample was determined by titration with sodium thiosulfate (0.1005 M). The impure KIO3 was dissolved in 50 cm 3 of water, an excess of potassium iodide (KI) and 5 cm^3 of dilute sulphuric acid was

44. ## math

write each fraction as a decimal and each decimal as a fraction in simplest form. 1.8/20 2.0.64 3.3/100

45. ## math

On April 20th, 2010, an explosion and fire on an oil rig operated by British Petroleum (BP) caused the worst oil spill in history. On May 20th, the Associated Press reported, “oil has been pouring into the Gulf from a blown-out undersea well at a rate of

46. ## maths

2x-y+3z=9,x+y+z=6x-y+z=2 solve equation on matrix inversion method

47. ## literature

In the merchant of venice act 2 scene 2, Portia gives Bassanio the ring with a warning, and Bassanio accepts the ring with his own pledge. How is this contract or bond similar to and different from the one made in Venice? What significance did rings have

48. ## Physical science

A piece of metal has a mass 85 cg and a volume of 450L. What is the density g/cm cubed? What would be the mass of 300 cm cubed of this metal? What would be the volume of 200 ounces of this metal?

49. ## math

2) The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?

50. ## Math

If a football player gains 40 yards on a play, but on the next play, he loses 10 yards, what would his total yards be for the game if he ran for another 60 yards? What did you count by to label the units on your number line ( make number line)

51. ## Calculus

Give an example of a function with a critical point that is neither a maximum nor a minimum. Specify the relevant point(s). This is what I have and this is what I got wrong... A function with a critical point that is neither a maximum nor a minimum would

52. ## Econmocis

I have 2 more questions that i don't know the answers to. please help :) 1. the chance that a society can actually achieve full employment is ________ percent. Select one: A. 1 B. 75 C. 10 D. 0 E. 45 2. Marquand says: Information technology has had its

53. ## Chemistry

can you please please help me with these questions I don't know how to do any of them. I know how to calculate moles and grams and mole ratio,etc but I don't understand the limiting excess reactant and yield stuff. Thanks! 1.In the following chemical

54. ## Math

Wei-Men make a square quilt that has an area of 100 square feet. It has twenty five square blocks each the same size. What is the length of each side of a block?

55. ## Physics

When an object is moving in a circle, but it is not held to the center by a tangible connection like a string, what provides the centripetal force? 1) some force such as friction or gravity. 2) the tendency for the object to move in a straight line. 3)

56. ## Chemistry

3. What experimental problems would confront you if you attempted to determine the concentration of the metal ions in solutions of each of the following reagents? a. Cr +3 which has a maximum absorbance at 407 nm with absorbtivity of 15 M -1 cm -1 and

57. ## pesh uni

2x1+2x2+2x3=0 -2x1+5x2+2x3=1 8x1+x2+4x3=1 gauss elimnation method plz sol any one

58. ## Math

In examination, 60 % of candidates failed, the number of candidates who passed was 500. Find the number that failed. Solution :60 /100*500 =300

59. ## calculus

Match club charges annual membership dues of 100 pesos per member, less 0.50 cantavo for each member over 600 and plus 0.50 centavo for each member less than 600. How many members should give the club most revenue from annual dues? I'm spamming this

During snack time at preschool, the teacher divided 3/5 of a gallon of milk evenly between 2 students. how much milk did each student get?

61. ## Compute Probability 😯😢

Compute the probability of randomly drawing five cards from a deck and getting 3 Aces and 2 Kings. (Give your answer as a fraction.)

62. ## math

A circular pizza has a radius of x cm. a.write an expression for the area of the pizza? b write an expression for the area of a pizza with radius that is 5 cm greater c. How much greater is the second area? write the difference as a simplified expression?

63. ## Strategic Management

A multidomestic strategy is similar to a transnational strategy. True or False?

64. ## Incidence Rate Math -

A certain disease has an incidence rate of 0.6%. If the false negative rate is 5% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the disease.

65. ## physics

What happens to centripetal force when speed decreases, in the special case that the object continues moving in a circle of the same radius? A) The radius cannot stay the same. B) The force also decreases. C) The force increases. D) Speed does not affect

66. ## Physics

A 300kg bobsled starts down an icy slope inclined at 12 degrees. There is some friction between the bobsled and the slope. Write the equations of motion in the two directions where the x axis is along the hillside.

67. ## Digits

You pick 2 digits (0-9) at random without replacement, and write them in the order picked. What is the probability that you have written the first 2 digits of your phone number? Assume there are no repeats of digits in your phone number. Give your answer

68. ## Math

There are 42 goats and chickens in the farm.there are 114 legs altogether.how many ducks are there?

69. ## physics: mechanics and heat

Two strings support a small 8kg body. find the tension in the strings if they both make 30° with the vertical.

70. ## Math 😢😢😢😢😢 Help

Suppose a jar contains 5 red marbles and 33 blue marbles. If you reach in the jar and pull out 2 marbles at random, find the probability that both are red.

71. ## Math

Mr. Kole has 30 students in his class he has twice as many girls as boys what is the ratio of boys to the class

72. ## Finite math and probability

A jar contains 9 red marbles numbered 1 to 9 and 7 blue marbles numbered 1 to 7. A marble is drawn at random from the jar. Find the probability that the marble is blue or even-numbered. I had 1/7

1. How do endothermic and exothermic reactions differ? a. Endothermic reactions release energy and are spontaneous. b. Exothermic reactions release energy and are spontaneous. c. Endothermic reactions give off heat and light. d. Photosynthesis is

74. ## chemistry

How can values of heats of formation found in tables be used to calculate heats of reactions? I am having a really hard time understanding this.

75. ## calculus

Match club charges annual membership dues of 100 pesos per member, less 0.50 cantavo for each member over 600 and plus 0.50 centavo for each member less than 600. How many members should give the club most revenue from annual dues?

76. ## Physics

A 5 kg magnet exerts a constant force of 3 N on a 0.25 kg magnet. 1) What force will the smaller magnet exert on the larger magnet? Please show step by step including the right equations for this problem

77. ## algebra

What is the degree of each monomial? -9 A. -8 B. 0 C. -10 D. 1

78. ## Math

In examination, 60 % of candidates failed, the number of candidates who passed was 500. Find the number that failed.

79. ## Math

determine the value(s) of k which a quadratic equation x^2+kx+9=0 will have. a) two equal real roots b) 2 distinct roots I tried to find the discriminant but couldn't get the right answer

80. ## Physics

Describe the steps necessary to convert a parabolic decreasing curve to a liner graph. That's is one with the relationship between two variables give a straight line.

81. ## Math

determine the value(s) of k which the equation x^2+kx+9=0 will have a) two real roots b) 2 distinct roots I tried to find the discriminant but I didn't get the right answer.

82. ## Chemistry

In a titration 100 mL of 3.65 g HCl is added to 200 mL of BA(oh)2 solution of an unknown concentration until the equivalent point find molarity of ba(oh)2

83. ## Calc AB

Given y=32t2 +16t+64, what is D2/t [y]? A.-64 B.-32 C.16 D.-64t+6**

84. ## Math

The hydrocarbon emissions at idling speed in parts per million (ppm) for automobiles of 1980 and 1990 are given for 20 randomly selected cars. 1980 models: a) Construct a dot plot

85. ## physics: mechanics and heat

The following three forces act on a particle: 30N at 30° with the x- axis, 50 N at 135° with the x-axis, and 20N along the negative x-axis. Find the fourth force on the particle which will keep it in equilibrium. Draw it's free-body diagram.

86. ## Chemistry

What specific evidence from the gold foil experiement led Rutherford to come to each of the following conclusions? The nucleus occupies very little space in the atom. Answer:He shot alpha particles through thin sheet of gold and discovered some were

87. ## Science

Calculate the molarity of 10 % HNO3 (w/w) solution if its density is 2.0 g/cc at 25° C.

88. ## Physics

Maya follows a maze by going: 3 m north, 2 m west, 1 m south, 1 m west, 2 m north, 6 m east, and 2 m north. What is her final displacement in a north/south direction.

89. ## physics

A basketball rolls to the right with a velocity of 4 meters per second. It is pushed up and accelerated up for 2 seconds with an acceleration of 4 meters per second . Then for 1 second it is pushed and accelerated down with an acceleration of 12 meters per

90. ## stat (grade 12) pls help

How many 3-digit numbers can be formed from the four integers 0, 1, 2, 3, if; a) no digit is repeated, b) Repetition is allowed, c) The number is even and repetition is not allowed, d) The number is odd and repetition is not allowed.

91. ## Physics

An object of mass m1 = 4.10 kg placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging object of mass m2 = 6.70 kg as shown in the figure -> Find the magnitude of the acceleration of

92. ## Math115

The distance that light travels in 1 year (a light year) is 5.88 times 10 Superscript 12 miles. If a star is 4.6 times 10 Superscript 7 light years from Earth, what is this distance in miles? Enter your answer in scientific notation. Round the coefficient

93. ## Geometry

Please help me. What is the radius of a circle whose area is equal to sum of the ares of the circles with radii which are 14cm and 18cm?

94. ## Algebra

A rectangular picture is twice as long as it is wide and is to be mounted on a mat with the same proportion. If the picture is 18 inches wide, can it be mounted on a mat of 259 square inches? To answer this, find the width of the mat.

95. ## maths

The inner side of a rectangular tank is 70cm, 80cm, 90cm. How many liters of water can it contain?

96. ## math (stats)

Enter your answers as decimals or fractions, rather than percents. In a family with 7 children what is the probability of having 4 boys and then 3 girls, in that order? (Exclude multiple births and assume all outcomes are equally likely). Preview In a

97. ## Calculus

find the intervals on which f is increasing and decreasing f(x)=(x-2)/(X^2-x+1)^2 I found the derivative a got a whole mess of things: ((x^2-x+1)^2-2(x^2-x+1)(2x-1)(x-2))/(x^2-x+1)^4 Do I have to use the quadratic formula to solve for the vertices to find

98. ## math

Solve the system of equations by finding a row echelon form for the augmented matrix. x-2y+z=8 2x+y-3z=-9 -3x+y+3z=5

99. ## Math

Matt must take a new code for the lock to his deer lease. It must consist of 3 letters, followed by 5 digits, then 2 letter and 1 more digit. The first letter must be a vowel and the middle digit of the first 5 must be even. If no letter or digit can be

100. ## system development

how to write a pseudocode for a system that allows user to create an account with features such as username, password, email, first name, surname, postal address

101. ## Genetics

A poor custodian is working in a seedy factory when he is pushed into a vat of ethidium beomide during an epic fight between a superhero and a villain. 1. What mutations are likely to occur from this exposure? 2. What repair mechanisms would be used to fix

102. ## Math (Perpendicular equation)

Write the equation for the line through the given point and perpendicular to the given line. Point: (4/5,9/10) Line: 6x-4y=0 I tried doing this problem and got 0=-4/6x-y+43/30 as the perpendicular equation. Is this correct?

103. ## Chemistry

Prepare 30mL of a stock KI soln by mixing 10.0mL of the 0.03M KI in 0.2M KNO3 with 20.0mL of the .2M KNO3 Determine the concentration of the iodide ion. What does it mean by the 0.03M KI in 0.2M KNO3? Is this just bad wording of the question? Am I just

104. ## Physics

Two trains approach each other at a railroad crossing. Train 1 travels 80 km/h and Train 2 travels 50 km/h. They both sound their horns before passing each other, emitting sound waves at 300 Hz. The speed of sound is 343 m/s. At what frequencies does a

105. ## Math

Consider the function g(x)=e^(2x+4) −4. Giving your answer in interval notation, find the domain of g^(−1)(x).

106. ## Science

The resistance is obserbed to be raised by4 times how many times the lenth has to b changed by keeping area constant

107. ## chemistry

For a skydiver jumping out of a plane at an altitude of 1 km, what would be the concentration of oxygen in his (or her) blood knowing that air pressure at 1 km drops to 89,874 Pa? Assume ideal behavior of gases, normal breathing, 25 °C and constant air

108. ## Chem

If the initial pressure of HD(g) is 8.913 atm, calculate the % decomposition of HD(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kp at 1000 K is 0.26. The initial pressure of the reaction products is 0 atm.

109. ## Physics

A 300kg bobsled starts down an icy slope inclined at 12 degrees. There is some friction between the bobsled and the slope. If the hill is 200m long, how long does it take for the sled to reach the bottom?

110. ## math

John's age is seventeen years less than twice Isabella's age. Together, the sum of their ages is 40. How old is John? I did x+(2x-17)=40 I got x=19 but it keeps saying i got it wrong can you please help.

111. ## Math wok

A large cooler contains the following drinks: 11 lemonades, 6 Sprites, 14 Cokes, and 7 root beers. You randomly pick two cans, one at a time (without replacement). Compute the following probabilities. What is the probability that you get either two root

112. ## CHemistry

What is the molecular formula of glycerol (a compound containing C, H, and O) from the following combustion analysis: when 2.00 g glycerol are combusted, 2.865 g CO2 and 1.564 g H2O are recovered. I already found uts molar mass its 92g/mol

113. ## Chemestry

Brontis is working in his lab? To continue his experiment he needs to calculate the total number of ions in 3.65 mol of MgCl2. Calculate the total number of ions in 3.65 mol of MgCl2

114. ## Math 115

Country Upper B has a population of approximately 276.5 million people and a total land area of about 3150.4 thousand square miles. What is the population density of Country Upper B? Round your answer to the nearest person. I know you need to divide

115. ## principles of color

The purpose of grating a color is to

116. ## Physics

A car heads due west on Interstate 80 going 63.0 km/hr for 2.1 hours. The car then turns and heads exactly northwest on Interstate 42 going 53 km/hr for 3.3 hours. What is the resultant displacement of the car? I've done some work on it and I have a good

117. ## Science

What is the ph scale used for?

118. ## Analytical chemistry

0.6140 grams of sodium phosphate (Na3PO4) was dissolved in 2 L of water to make a stock solution. 34 mL of this solution is then diluted to 100mL volumetrically to prepare the final solution. Calculate the molarity of phosphate ions in this solution.

119. ## Math

rectangle abcd picture above has length of 6 units and a width of 5 units. point d is the ordered pair. find the coordinates of a b c

120. ## math

What is the smallest of three consecutive integers if the sum of the smaller two integers is equal to 177 less than four times the largest? Note: Consecutive integers are integers that come one after the other. For example: -3, -2 and -1 or 14, 15 and 16.

121. ## Algebra

Find a polynomial function of degree 6 with −1 as a zero of multiplicity​ 3, 0 as a zero of multiplicity 2​, and 1 as a zero of multiplicity 1. The function is​ f(x) =

122. ## Maths

dx/dt = (x+2) sin^2 2t, given x=0, t=0. Solve the differential equation and calculate value x when t= pie/4, giving your answer in 3 significant figures.

123. ## calculus 1

Find equations of all tangent lines to the graph y=4x3−19x+40 which pass through the point (2,2) ​(not on the​ curve).

124. ## Physics

A car heads due west on Interstate 80 going 63.0 km/hr for 2.1 hours. The car then turns and heads exactly northwest on Interstate 42 going 53 km/hr for 3.3 hours. What is the resultant displacement of the car?

125. ## Math

Sarah has to go to her brother's baseball tournament that lasts for 4 days. She eats two-thirds of a hotdog at every game. He plays 2 games a day. Define your variables, write a function rule, find the domain and range, and tell whether the data is

126. ## Physics

An all-terrain vehicle of 4000 kg mass moves up a 13o slope at a constant velocity of 6.00 m/s. The rate of change of gravitational potential energy with time is

127. ## Math precalculus

The revenue for a sale of x books at \$80 each is given by R(x) = 80x. The commission for a revenue of x dollars is given by C(x) = 0.30x. Express the commission as a function of the number of books sold

128. ## Math graphs,dot,ven

I did a bar graph I think it is easier than dot and ven diagram. Am I correct because ven diagram there are no similarities and dot is to long.the problem asks as follows. Display the data using a dot plot,bar graph or vennot diagram.decide which data

129. ## Science,

Why don’t bodies of water freeze in the winter, even when ice or snow forms?

130. ## Analytical chemistry

A solution is created using 2.1700 grams of Calcium Hydroxide (MW is 74.093) in a 1L volumetric flask. A 50 mL aliquot is then taken and aded to a 350 mL volumteric flask and filled to the line. Finally, a 10 aliquot of the that solution is taken and added

131. ## Math

Claudia is arranging seating for her sorority's fall banquet. he has to sit 7 seniors, 5 juniors, 9 sophomores and 3 freshmen at the head banquet table. if members of the same class must sit together, in how ways can she do this? 2x7!7!x 2x5!5! x2x9!9! x

132. ## Physics

What net force F will accelerate a 0.5 kg mass at 4 m/s2? If this same net force were applied to a 20 kg mass, what would its acceleration be? Please show me step by step including the right equations

134. ## Algebra

Find a polynomial function of degree 4 with −2 as a zero of multiplicity 3 and 0 as a zero of multiplicity 1. f(x)= Thank you!

135. ## Maths

Factors Of 36

136. ## maths(Quantitative Method)

Write the augmented matrix corresponding to the system of equation. 2a-3b+c=1 -a+b-4c=3 3a-b=2

137. ## Physics

A car passes the starting line traveling 20.5 mph. It accelerates constantly at 7.96 mi/hr-s. After 7.67 seconds, how far has the car travelled? Be sure to give your answer in miles with the correct number of significant digits. The answer should be in the

138. ## maths need help

if a^x=(a/k)^y=k^m and a is not equal to 1 then show that 1/x-1/y=1/m show me work plz

139. ## Physics

a ball is shot upwards from ground level at a vertical speed of 40 m/s. a. What is the vertical speed of the ball just as it hits the ground? Explain. b. How long is the ball in the air? Explain. c. Draw a height vs time graph of the situation. Include a

140. ## math (caculus limits)

If for every ε > 0 we can find a δ > 0 such that if 0 < |x − a| < δ then |f(x) − L| < ε, then we can say lim x→a f(x) = L. true or false?

141. ## physics

top-bottom whole drag of 5m ice,density0.9kg\cc.by a rope mug of water bring from whole.rope length?

142. ## physics-sir damon help

An paris aeroplane left Benin airport at 1:00pm to fly to Yola airport 600km away on a bearing of 110• at an airspeed of 220km/hr. On that particular day, the meteorologists reported that there existed a steady wind of 35km/hr from a bearing of 40•.

143. ## mathematics

3500to be shared among three people so that the person get 50% of second person in turn gets 50% of third person. How much will each if them get?

144. ## Science, Nature Science,ence, Nature Science,ence

How does water help us stay cool?

145. ## Physics

Determine the relative density of a regular shaped object

146. ## Science, Nature Science

Can you give me three examples of things that photosynthesize that live in oceans?

147. ## Physics

A car drives north on highway at 40km/h and then turns back and drives south back to the strating point at 60 km/h, what is the avarge speed of the car?

148. ## General Chemistry

A typical human adults exhales 500 mL of air per breath. At this rate, calculate the volume of air exhaled after 20 breaths in units of cubic meters.

149. ## chemistry

How much energy is required to make H2O(g) from H2O(l)? Basically this deals with bond energies and heats of formation. But I'm not sure how to find it

150. ## Chemistry

A student prepares a soln that is initally 0.006M Pb2+ and 0.00450M I-. This soln is placed into a 1.00cm wide cuvet and inserted into the spectrometer producing as abosrbance reading of 0.430 at a wavelength of 456nm. What is the equilibrium concentration

151. ## math

Find the equation of the line tangent to the curve 2(x^2+y^2)^2=25(x^2+y^2) at a point (3,-1) written in the form y = mx+b

152. ## AP Chemistry

A 12.8 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 21.3 g. What was the mass of iron in the sample of ore? Answer in units of g.

153. ## Quick English help

what real complication does lady macbeth come aware of act 2 scene 2? This is in the story of Macbeth

154. ## English

At this point he did not care if he had wronged others because he has been wronged by many of whom he thought he was close to. How can I reword this without using so many "he"? I used it five times & i'm not sure how to reword everything to make it make

155. ## Math (Domain and range)

Evaluate the function f(x)={9x+5, x(or equal to)0 Determine its domain and range using interval notation? I believe the domain is (-infinity,infinity) but how would I find the range?

156. ## Princeple of color

What is the direct complete of red

157. ## GOVERNMENT

PROBLEMS OF ELECTORAL COMMISSION

158. ## chemistry

What is n+1+m for 4p orbital and what is n+l+m for 4p orbital

159. ## Math

937 : I am 2 more rhan the digit in the tens place.:I am 4 more than the digit in the ones place.I the smallest digit.

160. ## Math

524 :I am the smallest digit.:I am 3 more than the digit in the hundres :I lessthan the digit in the tens plce.

161. ## differential equation

suppose you start with 75 grams of the substance after 2.5 min you have grams left. how much longer will it take you have half remaining

162. ## French

Is this right? true love letters you read were from me véritables lettres d'amour que vous lisez étaient de moi

163. ## Math

Find the roots for the given equstion p^4+m^4=0