# Meghan

Most popular questions and responses by Meghan
1. ## chemistry

a student needs to prepare an aqueous solution of sucrose at a temperature of 20 degrees c with a vapor pressure of 15. 0 mm Hg. How many grams of sucrose (mm=342 g/mol) does she need if she uses 375 g H20? (the vapor pressure of water at 20 degrees c is

2. ## chem

For the reaction 3NO2 + H2O  2HNO3 + NO, how many grams of HNO3 can form when 1.00 g of NO2 and 2.25 g of H2O are allowed to react? This is a limiting reagent problem. 1. Write the equation. You have done that and it is balanced. 2. Convert 1.00 g NO2 and

3. ## algebra

The half-life of plutonium-234 is 9 hours. If 40 milligrams is present now, how much will be present in 4 days? (Round your answer to three decimal places.)

4. ## Statistics

An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are independently and normally distributed with a mean of 120 cm and a standard deviation of 4.7 cm. Find the probability that if 3 are

5. ## English; Grammar

Hey there! I'm just needing to check my 10 questions because I'm still lost and need assistance. Please correct me if I'm wrong and tell me why! ----------------------------- 1) Choose the answer that identifies the participial in the sentence. Dozens of

6. ## chemistry

The kinetic energy of a rolling billiard ball is given by KE=1/2mv2. Suppose a 0.17-kg billiard ball is rolling down a pool table with an initial speed of 4.7m/s . As it travels, it loses some of its energy as heat. The ball slows down to 3.7m/s and then

7. ## algebra

Ociel has designed a square mural that measures 10 feet on each side. Bill has also designed a square mural, but his measures y feet shorter on each side. a. Write an expression to represent the area of Bill's mural: (10-2y)(10-2y) b. How much smaller than

8. ## physics

a student drops a ball from a window 3.5m above the sidewalk. the ball accelerates at 9.80m/s^2. How fast is it moving when it hits the sidewalk.

9. ## chemistry

The Arrhenius theory explains why ammonia, NH3, is basic, but the Bronsted-Lowry theory does not. True or False

10. ## physics

A bike accelerates from 0.0m/s to 4.0m/s in 4s. what distance does it travel?

11. ## physics

A boat floating in fresh water displaces water weighing 35.6 kN. (a) What is the weight of the water this boat displaces when floating in salt water of density 1.10 x 10^3 kg/m^3? (b) What is the difference between the volume of fresh water displaced and

12. ## Chemistry

The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 450. g of pure Cu?

Should I capitalize indians in a sentence? Example - The indians live in the southwest. Another one has me confused, I played with Mexican jumping beans. Should I capitalize mexican jump beans? Thanks any help will be great.

14. ## physics

You push a 2.0 kg block against a horizontal spring, compressing the spring by 15 cm. Then you release the block, and the spring sends it sliding across a tabletop. It stops 75 cm from where you released it. The spring constant is 200 N/m. What is the

15. ## Calculus

The radius of a circle increases from 2 meters to 2.1 meters. Use differentials to estimate the increase in the area of this circle I dont understand how to do this type of problem could someone help?

16. ## Algebra

Snape has 2000 mL of a magic potion that is 30% DeMuggle Juice. He also has hundreds of 25 mL bottles that are full of 75% DeMuggle Juice solution. Every time he waves his wand, one of these bottles is added to his magic potion. How many times must he wave

17. ## Calculus

The base of a triangle is shrinking at a rate of 1 cm/min and the height of the triangle is increasing at a rate of 6 cm/min. Find the rate (in cm2/min) at which the area of the triangle changes when the height is 38 cm and the base is 36 cm. I just want

18. ## Calculus

Two poles are connected by a wire that is also connected to the ground. The first pole is 60 ft tall and the second pole is 30 ft tall. There is a distance of 90 ft between the two poles. Where should the wire be anchored to the ground (in ft, from the

19. ## Math

One grocery clerk can stock a shelf in 40 min, whereas a second clerk requires 20 min to stock the same shelf. How long would it take to stock the shelf if the two clerks worked together? Is this how you do this: t/40 + t/24 =1 t*3/40*3 + t*5/24*5 =1

20. ## College Physics

Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 51.5 N. If he does 3.85 102 J of work on the sled while exerting the force horizontally, through what distance must he have pushed it?

21. ## geometry

A tree that is 100 feet tall casts a shadow that is 150 feet long. Determine the angle at which the rays of the sun hit the ground to the nearest degree.

22. ## physics

A baseball thrown at an angle of 65.0^\circ above the horizontal strikes a building 16.0 {\rm m} away at a point 5.00 {\rm m} above the point from which it is thrown. Ignore air resistance. a) find the magnitude of the initial velocity of the baseball. b)

23. ## Chemistry

The formation constant* of [M(CN)4]2– is 7.70 × 1016, where M is a generic metal. A 0.150-mole quantity of M(NO3)2 is added to a liter of 0.870 M NaCN solution. What is the concentration of M2 ions at equilibrium?

24. ## Physics

An Alaskan rescue plane traveling 43 m/s drops a package of emergency rations from a height of 129 m to a stranded party of explorers. The acceleration of gravity is 9.8 m/s 2 . Where does the package strike the ground relative to the point directly below

25. ## math

Suppose that the format for license plates in a certain state is two letters followed by four numbers. How many different plates can be made if repetitions of numbers and letters are allowed except that no plate can have four zeros?

26. ## physics

the car travels at 20m/s when the driver sees a child. It takes 0.8s to react, then steps on the brakes and slows at 7.0m/s^2. How far does the car go before it stops?

27. ## organic chem

. Use the Henderson-Hasselbach equation: pH = pKa + log [A-]/[AH], where A- is the conjugate base and AH is the weak acid. Calculate the pH of an acetate buffer in which the acetate concentration [CH3COO-] is 3.5 times greater than acetic acid [CH3COOH].

28. ## Math

A tree grows vertically on a slope which has an incline of 27 degrees. When the sun is at an elevation of 78 degrees, the tree casts a shadow of 48 feet directly down the slope.

29. ## Geometry

In the standard (x,y) coordinate plane, if the x-coordinate of each point on a line is 4 less than twice its y-coordinate, what is the slope of the line?

30. ## physics

A disk, with a radius of 0.25 m, is to be rotated like a merry-go-round through 800 rad, starting from rest, gaining angular speed at the constant rate α1 through the first 400 rad and then losing angular speed at the constant rate -α1 until it is again

65. ## organic chem

Classify as primary, secondary, tertiary alcohols. i. 2-butanol ii. 3-methyl-3-pentanol iii. 2-methyl-1-pentanol iv. 3-chlorocyclohexanol

66. ## math

In a game of blackjack, each player is dealt two cards from a standard 52-card deck. If the first card is 10 of clubs, what is the probability that the second card is heart?

67. ## Math

A florist has access to 9 types of flowers and 8 types of foliage. He makes bouquets using 4 types of flowers and 3 types of foliage. How many different bouquets can he make?

68. ## algebra2

What is the value of x in the solution to the system y = 4x + 3 and 3x + 2y = -16? (Round to the nearest integer if necessary.)

69. ## Math- Geometry

A board 20 feet long is cut into two boards with lengths in ratio of 5 to 2. To the nearest tenth of a foot, how lng is the longer piece of the board?

70. ## chemistry

The mass of an atom is distributed evenly throughout the atom.

71. ## Marketing

Clothing stores, grocery stores, shoe stores, and bookstores, are all examples of what type of channel member? A. retailers B. producers C. wholesalers D. drop shippers A.Retailers is my answer.

72. ## org. chem

How to start these problems out: Please help thank you Use the Henderson-Hasselbach equation: pH = pKa + log [A-]/[AH], where A- is the conjugate base and AH is the weak acid. Calculate the pH of an acetate buffer in which the acetate concentration

73. ## Algebra

Flying with the wind, a small plane flew 360 miles in 2hours. Against the wind, the plane could fly only 300 miles in the same amount of time. Find the rate of the plane in calm air and the rate of the wind. I cant figure out how to solve this. Please help

Confused..The grocery store stocks 3 brands of yogurt. The store sells two containers of Brand A yogurt for every one container of Brand B or Brand C Yogurt. If the store sells 100 containers of yogurt a day, how much of each brand of yogurt do they sell?

75. ## calculus

Differentiate the function f(x) = 186.5

76. ## History

I am home schooled and I am suppose to ask people their ideas on how to solve the Social Security problem. It says in my book the population of working Americans is not growing quickly enough to fund continued increases in Social Security spending. At some

77. ## Physics

a person's metabolic processes can usually operate at a power of 6 W/kg of body mass for several hours at a time. If a 60 kg woman carrying a 12 kg pack is walking uphill with an energy-conversion efficiency of 20 percent, at what rate, in meters/hour,

78. ## organic chem

Dehydrate the following a. 2-methyl-1-propanol b. 2-methylcyclohexanol c. 2-methyl-1-phenyl-1-propanol d. 1-methylcyclopentanol

79. ## Math

A teacher is trying to pick 7 students to represent his class at an upcoming state competition. If there are 18 boys and 10 girls in the class, in how many ways can the teacher pick 4 boys and 3 girls to attend the event?

80. ## Physics

a book weighs 4 N. When held at rest in your hands, the net force on the book?

81. ## geometry

In triangle ABC, if line BC is one inch longer than line AB, line AC is 10 inches shorter than the sum of line BC and line AB , and the perimeter of triangle ABC is 72 inches, find the length of line BC?

82. ## 5th grade math - multiplying decimals

Marlon's desktop measures 0.57 meters by 1.45 meters. that is the ares of his desktop? I came up with .8265 is this correct? I thought that the answer should be more than one.

Attendance at the Fireman's Ball has been declining. Each Year, the number attending is 2/3 of the previous year's attendance. In what year will the attendance be less than 1/3 the original attendance?

Walt has a piece of rope which is 10 1/3 feet long. He has to cut it into 4 equal pieces. How long will each piece be? I took 10 1/3 divided by 4 which is 2.58333. How can I explain this to my 5th grader in fractions?

85. ## Marketing

I am creating my own company (clothing store) and have to create a circle graph and frequency table, and explain how they can help my company. I don't know what to put in them. I know a circle graph is often choosen to compare things like the cost of

86. ## Marketing

Which of the following statements describes how price relates to profit? A. The lower the price is set, the lower the profit will be. B. The prices a business sets for products and services help in determining the profit of the business. C. A good or

87. ## organic chem

Amide formation: draw the structure (or provide the IUPAC name) of the amide formed (appropriate coupling reagent required) between benzoic acid and N-ethyl ethanamine (diethyl amine)

88. ## organic chem

Draw and give IUPAC name the products of dehydration of 2-ethyl cyclopentanol I know you can't draw it but the name or even how to draw this would be appreciated

89. ## Physics

A capacitor consisting of two parallel plates of area A = 4.6 m2 and spacing d = 0.150 m is filled with two parallel slabs of dielectric material of equal thickness and with dielectric constants 1 = 2.20 and 2 = 5.50, respectively. What is the total

90. ## 7th Geometry

We are using the Pythagorean rule and I'm a little confused... Solve each problem using a grid. Round your answer to the nearest hundredth. Dover is located at (1,2) and Goodlow is located at (5,7). How far apart are the 2 cities? My answer is 6.40... am I

91. ## physics

A man stands on the roof of a 19.0 m tall building and throws a rock with a velocity of magnitude 30.0 m/s at an angle of 30.0 degrees above the horizontal. Ignore air resistance. Calculate the horizontal distance from the base of the building to the point

92. ## Algebra

Solve the exponential equation. 4^2x – 2 = 26 I know I use the one to one property to equate. But I am confused. Thanks!

93. ## Science

Suppose you are on a ship somewhere in the Atlantic Ocean. You take sightings on Polaris and find that it's altitude is 52 degrees. You're told that a certain star is on the prime meridian at midnight Greenwich time. This star is on your meridian at 4 A.M

Marla has 16 nickles and pennies. She has 3 times as many pennies as nickels. What is te total value of the coins? I don't know how to come up with home many nickels..Can someone help?

What are the economic advantages to government involvement in health care? What are the economic disadvantages? What are some ways of curbing the negative impact of rising health care costs on an economy?

96. ## english

what is the verb phrase in this sentence-Do you know the meaning of its letters?

97. ## algebra

susie has designed an exercise program for herself. one part requires her to walk between 25 and 30 miles each week. she plans to walk the same distance each day five days a week. what is the range of miles that she should walk each day? write and solve a

98. ## geometry

I'm having trouble with an assignment that asks me to design a structure so that the sumof the measures of the interior angles of all the individual convex polygons is 4500 degrees. i'm souppoused to have a triangle a hexagon an octagon and a rectangleall

99. ## Math

Using his driver on the 7th tee, Chris hits an excellent shot, right down the middle of the fairway. The ball follows the parabolic path shown in the figure, described by the quadratic function: h(x)=0.5x-0.002x^2. This relates the height, h, of the ball