Thursday

December 18, 2014

December 18, 2014

Post a New Question | Current Questions

**Math**

In a survey of 280 college students, it is found that 67 like brussels sprouts, 93 like broccoli, 60 like cauliflower, 26 like both brussels sprouts and broccoli, 21 like both brussels sprouts and cauliflower, 20 like both broccoli and cauliflower, and 10 of the students like ...
*Sunday, March 30, 2014 at 9:10pm*

**college algebra**

perform the indicated computation. write the answer in scientific notation (2x10^)(3.5x10^)
*Sunday, March 30, 2014 at 3:00pm*

**math**

2. In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in college. c.At least 4...
*Sunday, March 30, 2014 at 2:34pm*

**English**

Embed a quotation from an interview that you conducted. " I suggest that you study hard in college, but get a job too. Jobs teach much more than a school ever does." Workman, Tom. Personal Interview. 25 Feb. 2007.
*Sunday, March 30, 2014 at 1:51pm*

**math**

2. In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in college at least 4
*Sunday, March 30, 2014 at 1:33pm*

**math**

In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in college. all 11
*Sunday, March 30, 2014 at 11:59am*

**math**

In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in college. a. Exactly 7 b...
*Sunday, March 30, 2014 at 9:32am*

**Introduction to Criminal Courts**

Analyze and explain the importance of a college degree for someone seeking to join the police or police training. Analyze and explain how higher education plays a pivotal role in advancement and promotions in the police department. Analyze whether higher education is pivotal ...
*Thursday, March 27, 2014 at 10:25pm*

**Calculus**

Posted by MG on Wednesday, March 26, 2014 at 6:54pm. The hands of a clock in some tower are 4.5m and 2m in length. How fast is the distance between the tips of the hands changing at 9:00? (Hint: Use the law of cosines) The distance between the tips of the hands is changing at ...
*Thursday, March 27, 2014 at 3:36am*

**College Calculus**

The hands of a clock in some tower are 4.5m and 2m in length. How fast is the distance between the tips of the hands changing at 9:00? (Hint: Use the law of cosines) The distance between the tips of the hands is changing at a rate of _______ m/hr at 9:00? I tried several times...
*Wednesday, March 26, 2014 at 6:54pm*

**college physics**

A 0.240-kg billiard ball that is moving at 3.00 m/s strikes the bumper of a pool table and bounces straight back at 2.40 m/s (80% of its original speed). The collision lasts 0.0150 s. (a) Calculate the average force exerted on the ball by the bumper. (b) How much kinetic ...
*Wednesday, March 26, 2014 at 2:32am*

**college physics**

Competitive divers pull their limbs in and curl up their bodies when they do flips. Just before entering the water, they fully extend their limbs to enter straight down. Explain the effect of both actions on their angular velocities. Also explain the effect on their angular ...
*Wednesday, March 26, 2014 at 1:48am*

**College Chemistry (DrBob222)**

A solution of an unknown weak acid, HA, is titrated with 0.100 M NaOH solution. The equivalence point is achieved when 36.12 mL of NaOH have been added. After the equivalence point is reached, 18.06 mL of 0.100 M HCl are added to the solution and the pH at that point is found ...
*Tuesday, March 25, 2014 at 5:31pm*

**College Gen.Chemistry **

A student wanted to determine the amount of copper in a sample of copper ore. The student dissolved a 2.500 ± 0.001 g piece of copper ore in about 75 mL of nitric acid; then, a complexing agent was added. The student transferred this solution to a volumetric flask and ...
*Tuesday, March 25, 2014 at 5:29pm*

**College Chemistry (DrBob222)**

You have 120.0 mL of a 0.245 M solution of NaCl in an open beaker. After several days, you test the solution and find that it now has a concentration of 0.348 M. How much water must have evaporated from the beaker given the new concentration?
*Tuesday, March 25, 2014 at 4:52pm*

**College Gen. Chemistry - Science**

You have 120.0 mL of a 0.245 M solution of NaCl in an open beaker. After several days, you test the solution and find that it now has a concentration of 0.348 M. How much water must have evaporated from the beaker given the new concentration?
*Tuesday, March 25, 2014 at 4:47pm*

**Math-Statistics**

The chance that a college student has a job offer before graduation is 70%. If I sample 200 graduates… (use continuity correction) a) what is the chance more than 130 of them have a job offer? b) what is the chance less than 133 of them have a job offer? c) what is the ...
*Monday, March 24, 2014 at 7:25pm*

**Social Studies :)**

2. The only Native Americans who successfully stayed on their land were the (1 point) Seminole. *** Sauk. Cherokee. Fox. 3. What act did the United States government pass in order to be able to move Native Americans off their land into Indian Territory? (1 point) Native ...
*Monday, March 24, 2014 at 4:36pm*

**college chem 2**

The enthalpy of vaporization of liquid diethyl ether is 26.0kJ/mol at 35'C calculate the deltaS' for vapor to liquid
*Monday, March 24, 2014 at 3:08am*

**college chem 2**

Calculate the deltaS univ for the dissolving of NaCl at room temp. S' NaCl(s)=72.11 J/k*mol; S' NaCl(aq)=115.5 J/k*mol;deltaH' NaCl(s)=-411.12 kJ/mol; deltaH' NaCl(aq)=-407.27 kJ/mol.
*Monday, March 24, 2014 at 3:07am*

**College Chem**

What is the maximum amount of barium sulfate that will dissolve in 600mL of 0.02M Na2SO4? Barium sulfate ksp=1.1*10^-10
*Monday, March 24, 2014 at 3:02am*

**College Physics**

A doubly charged ion is accelerated to an energy of 33.0 keV by the electric field between two parallel conducting plates separated by 1.70 cm. What is the electric field strength between the plates?
*Monday, March 24, 2014 at 12:25am*

**College Physics**

The point charges in Figure 17.41 are located at the corners of an equilateral triangle 25.0 cm on a side, where qb = +12.0 µC and qc = -4.50 µC. (Assume that the +x-axis is directed to the right.) (a) Find the electric field at the location of qa. Magnitude ? N/C ...
*Monday, March 24, 2014 at 12:18am*

**college physics**

During a circus act, an elderly performer thrills the crowd by catching a cannon ball shot at him. The cannon ball has a mass of 10.0 kg and the horizontal component of its velocity is 8.00 m/s when the 65.0-kg performer catches it. If the performer is on nearly frictionless ...
*Monday, March 24, 2014 at 12:10am*

**College Chemistry**

A solution is saturated in both nitrogen gas and sodium iodide at 50 degrees C . When the solution is cooled to 25 degrees C what is most likely to occur?
*Sunday, March 23, 2014 at 11:42pm*

**College Math**

show that the quadrilateral with vertices at the following points is a parallelogram and find its area. a = (5,2,0), b = (2,6,1), c = (2,4,7), d = (5,0,6)
*Sunday, March 23, 2014 at 1:33am*

**college physics 2**

A double-slit diffraction pattern is formed on a distant screen. If the separation between the slits decreases, what happens to the distance between interference fringes? Assume the angles involved remain small. A double-slit diffraction pattern is formed on a distant screen. ...
*Saturday, March 22, 2014 at 12:45pm*

**Achieving Academic Excellence**

The measure of how much we understood and learned in a college course is referred to as: A. assessments. B. grades. C. testing. D. feedback.
*Friday, March 21, 2014 at 6:31pm*

**scholarship essay edit**

can someone edit this? Throughout my life’s journey, I have come to attain two true passions - the first one being English studies. Since the very dawn of childhood, I have been known to bleed the calligraphic content of Gary Soto's brilliant poetry and breathe the ...
*Friday, March 21, 2014 at 1:23pm*

**Statistics **

1. A sports researcher gave a standard written test of eating habits to 12 randomly selected professionals, four each from baseball, football, and basketball. The results were as follows: Eating Habits Scores Baseball Players Football Players Basketball Players 34 27 35 18 28 ...
*Thursday, March 20, 2014 at 4:20pm*

**College math**

A and B agree to share the cost of an $18 pizza based on how much each would eat. B ate 3/2 of the pizza that A ate. How much should A and B each pay? A= B= Thank you
*Thursday, March 20, 2014 at 2:30am*

**A Peculiar Question**

Is either a B+ or an A- considered a terrible grade? If I received a B+ for two essays that I was assigned and then an A- for another, will these grades ultimately cause a decrease in my GPA? I want to enter into either a film or art college, and I want to retain my 4.0 GPA ...
*Wednesday, March 19, 2014 at 9:29pm*

**College Math**

In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology but not Spanish?
*Wednesday, March 19, 2014 at 2:49pm*

**English **

1-2. My uncle decided to splurge and _____with a country club because golf is his favorite____.(affiliate,deficit) 3-4. Gail didn't ____from smoking cigarettes until her employer made not smoking ____.Keeping her job was a very good incentive to get her to quit.(agnostic, ...
*Tuesday, March 18, 2014 at 11:25pm*

**College Algebra**

The table lists how poverty level income cutoffs(in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the poverty level cutoff in 1987 to the nearest dollar. the poverty level cutoff in 1987 was _____ dollars. ( round to the nearest ...
*Tuesday, March 18, 2014 at 8:00pm*

**College Algebra**

How to get the answer to a formula if I=ã2P/L relates the coefficient of self-induction, L (in henry's), the energy P stored in an electronic circuit (in joules), and the current I (in amps). Find I if P=120 and L=70. The example I have to go by does not help ...
*Tuesday, March 18, 2014 at 6:55pm*

**English**

I have to write a paper on an author and then effectively persuade the audience that this author is an important and influential writer who should be included in the curriculum for a college writing course. I chose Ernest Hemingway. This is my thesis - Hemingway's ...
*Tuesday, March 18, 2014 at 12:24pm*

**College Math**

This is my last question, I promise! Use U={1,2,3,4,5,6,7,8,9,10} A={2,3,5} B={5,6,7,9} C={1,4,10} to find the set AUB You guys are awesome!!
*Tuesday, March 18, 2014 at 1:09am*

**College math**

Help me The product of 4 and y is the sum of 3 and 9
*Monday, March 17, 2014 at 11:52pm*

**College math**

the lengths of the legs of a right triangle are given: a=10 b=24 c=____? Thank you so much
*Monday, March 17, 2014 at 8:05pm*

**College math**

Which statement describes the quadratic equation 6x^2-4x+1=0,correctly? A. it is one completed real root? B. It is two complete complex roots? C. It is two unequal real roots? Please help me with this
*Monday, March 17, 2014 at 4:58pm*

**College Algebra**

Please, I need your help!How much water must be evaporated from 16oz of a 2% salt solution to make a 4% salt solution?
*Monday, March 17, 2014 at 4:52pm*

**Math college level**

Sorry to bother those who are helping me but I simply just do not understand and really need help. A single person could expect to pay $5220 in income taxes with an adjusted income gross of $29,000. If my adjusted gross increases to $2,000 but does not place me in a higher tax...
*Sunday, March 16, 2014 at 11:20pm*

**basic college math**

need the answer to track A offers a flat fee of $25 and $.40 per mile. truck b offers a flat fee of $30 and $.25 per mile
*Sunday, March 16, 2014 at 12:51pm*

**College History**

How do I find the answer to the question below? Salonica is today a provincial city in a small country. For centuries it was the second city of a major empire. Little or nothing is now left of that heritage. What is it about the past of this city, however, that can provide ...
*Friday, March 14, 2014 at 8:23pm*

**Social studies**

Four major candidates ran in the 1824 election, all under the "Democratic-Republican" name. One of the candidates, Andrew Jackson, was already famous. In the 1780s, he earned the right to practice law and served in various offices of the state government, including ...
*Friday, March 14, 2014 at 1:20pm*

**College math**

Find the area and the circumference of a circle of radius 4 meters. Thank you
*Thursday, March 13, 2014 at 3:57am*

**College math**

The length of the sides of a triangle are given as 8, 15, 17. The hypotenuse is the side that is the length of ____?
*Thursday, March 13, 2014 at 3:55am*

**College Physics**

PLEASE HELP. DUE TOMORROW A large box 4.5 m on a side has mass 90 kg. A force F is applied as shown, making an angle θ = 35 with respect to the vertical. How large must the force be to tip the box about the pivot point P? The force is being pulled downward with a 35 ...
*Monday, March 10, 2014 at 10:48pm*

**english **

I have to write a research paper on why ernest hemingway would be a good author for college students to ready. Any suggestions on where to start?
*Monday, March 10, 2014 at 3:47pm*

**College Chemistry**

Please help me. I have worked on this for 2 days. I don't understand the ratio of this equation.4Na+O2 to 2Na2O. for question: How many grams of Na2O are produced when 81.ograms of Na reacts?
*Friday, March 7, 2014 at 4:59pm*

**Which sentence is a commonplace assertion?**

Which sentence is a commonplace assertion? A. We all know that Texans are mad about football, and the players usually get the attention. B.Known as the Allen Eagles Escadrille (French for "squadron"), Allen's band is considered the largest in the country-high ...
*Thursday, March 6, 2014 at 5:08pm*

**college chemistry**

Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
*Wednesday, March 5, 2014 at 5:13pm*

**college physics 1**

Reviewing Interactive Solution 5.46 will help in solving this problem. A stone is tied to a string (length = 1.29 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...
*Wednesday, March 5, 2014 at 3:36am*

**college physics 1**

A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. The sensor measures the magnitude of the normal force that the seat exerts on a rider. The loop-the-loop ride is in the vertical plane and ...
*Wednesday, March 5, 2014 at 3:35am*

**college physics 1**

Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 35.1 km/s and 63.3 km/s. The slower planet's orbital period is 6.74 years. (a) What is the mass of the star? (b) What ...
*Wednesday, March 5, 2014 at 3:35am*

**Differential Equations**

A college professor contributes $5,000 per year into her retirement fund by making many small deposits throughout the year. The fund grows at a rate of 7% per year compounded continuously. After 30 years, she retires and begins withdrawing from her fund at a rate of $3,000 per...
*Tuesday, March 4, 2014 at 10:28pm*

**College Chemistry. **

During volcanic eruptions, hydrogen sulfide gas is released and is oxidized by the oxygen in the air yielding sulfur dioxide gas and water vapour. Calculate the standard enthalpy change for this reaction given the following: 3S(rhombic) + 2H2O(g) → 2H2S(g) + SO2(g) Δ...
*Tuesday, March 4, 2014 at 2:23pm*

**college algebra**

Mitsuko salary for next year is $44490. This represents a 7% increase over this year's salary. Find mitsuko present salary.
*Monday, March 3, 2014 at 2:11pm*

**college algebra**

if a computer cost and electronics dealer $300 and she sell them for $800 what is her rate of Profit based on the selling price
*Monday, March 3, 2014 at 1:59pm*

**English**

Using semicolons Colleen is a clever teacher;she is also an inspiring one. Her lectures are interesting; they are full of information. She has a college degree in history; world history is her specialty. She begins her classes by answering questions; she ends them by asking ...
*Monday, March 3, 2014 at 12:06pm*

**College Cultural Geography**

Can someone explain what this paragraph is talking about? I do not understand it. "But Western universalism, again, has two faces: it also promotes the principles of liberty and equality throughout the world. It is not possible to proclaim global human rights, on the one ...
*Sunday, March 2, 2014 at 11:33pm*

**College Chemistry - Science**

In an acid-base experiment at 25.0°C, a sodium hydroxide solution was standardized against KHP. The average value for the concentration of the sodium hydroxide solution was calculated to be 0.0125 M. This solution was used to titrate the phosphoric acid present in coke. ...
*Sunday, March 2, 2014 at 9:25pm*

**College Chemistry - Science**

At room temperature (25°C), 45 mL of a 0.002 M acid solution reacts with 30 mL of a NaOH (aq) solution (pH = 11.95), determine (through calculations) whether the acid is phosphoric acid (H3PO4), acetic acid (CH3COOH), or carbonic acid (H2CO3).
*Sunday, March 2, 2014 at 7:54pm*

**Math**

The student activities department of a community college plans to rent buses and vans for a spring-break trip. Each bus has 40 regular seats and 1 handicapped seat; each van has 8 regular seats and 3 handicapped seats. The rental cost is $305 for each van and $985 for each ...
*Sunday, March 2, 2014 at 11:20am*

**college busines math**

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided to offer a $1.00-off ...
*Saturday, March 1, 2014 at 10:32am*

**College Algebra**

find the eqauation for this problem Basketball Scroing- The Fenton College Cougers made 40 filed goals in a recent basketball game,some 2-pointers and the rest 3-pointer, altogether, the 40 baskets counted for 89 point. How many of each tyep of field goal was made? My answer X...
*Saturday, March 1, 2014 at 12:00am*

**math(algebra)**

A small college opened in 1999. In the linear model below, x represents the number of years after 1999, and y represents the student population. Interpret the slope. y = 576 + 173x Answer choices are::: A: An additional year of the college being open is associated with an ...
*Friday, February 28, 2014 at 6:23pm*

**college math**

Suppose you deposit $103,000 into an account paying 7.5% simple annual interest, and that you won't touch the account until it holds $1,000,000. How long must you wait?
*Wednesday, February 26, 2014 at 10:50pm*

**College Mathematics**

The number of proper subsets of set A are? When A= {1,3,5,7}
*Wednesday, February 26, 2014 at 9:12pm*

**college**

it is acceptable to copy most of the author's words. true or false
*Wednesday, February 26, 2014 at 6:39pm*

**Business,history,geography and maths lit**

What can I study at college with my subjects I passed wth higher certificate?
*Wednesday, February 26, 2014 at 7:41am*

**ap calculus.linear**

i dont clearly understand questions 1 and 2. so the question have to be A+f??? When he was young, Captain Conundrum mowed lawns on weekends to help pay his college tuition bills. He charged his customers according to the size of their lawns at a rate of 5¢ per square foot...
*Wednesday, February 26, 2014 at 3:11am*

**AP linear algb.**

i dont understand the question a and b. so question a, it have to be add all? When he was young, Captain Conundrum mowed lawns on weekends to help pay his college tuition bills. He charged his customers according to the size of their lawns at a rate of 5¢ per square foot ...
*Wednesday, February 26, 2014 at 2:52am*

**College Algebra**

A farmer needs to build a rectangular corral for his animals. He has 200 yards of fencing available. He needs to make 4 pens. What is the largest corral he can create? (Remember the pens also count as a part of the perimeter, not just the outside of the corral)
*Wednesday, February 26, 2014 at 2:26am*

**chemistry**

if a college student went into the lab and produced 45 grams of Na2CO3, what is percent yield of this trial?
*Tuesday, February 25, 2014 at 11:29pm*

**College Chemistry**

The density of a 0.0122 M KMnO4 is 1.037 g/mL. Suppose 26.35 g of 0.0122 M KMnO4 are required to titrate 1.072 g of a household H2O2 solution. a)Calculate the mL of MnO4^- added to reach the endpoint. b)Calculate the moles of MnO4^- added to reach the endpoint. c)Calculate the...
*Tuesday, February 25, 2014 at 3:47pm*

**Statistics**

A class survey in a large class for first-year college students asked, "About how many minutes do you study on a typical weeknight?" The mean response of the 463 students was x = 118 minutes. Suppose that we know that the study time follows a Normal distribution with...
*Tuesday, February 25, 2014 at 11:11am*

**statistics**

An SRS of 40 San Diego County Schools graduates showed that 26 of the 40 enrolled in a college or university right out of high school. a. Find a 90% confidence interval for the proportion of all San Diego County Schools graduates who enrolled in a college or university right ...
*Monday, February 24, 2014 at 6:19pm*

**College Physics**

A very long wire carries an I1 = 7.80 A current along the x axis and another long wire carries an I2 = 5.13 A current along the y axis. (I2 is directed upward on the y axis, and I1 is directed to the right on the x axis) What is the magnetic field at point P located at x = 4....
*Sunday, February 23, 2014 at 10:49pm*

**college ch**

CaO has a face-centered cubic unit cell in which the O2- anions occupy corners and face centers, while the cations fit into the hole between adjacent anions. What is its density if the ionic radii of Ca2+, O2- ions are 57.63 pm and 184.0 pm, respectively?
*Sunday, February 23, 2014 at 10:00pm*

**College Chemistry**

If your heating generates soot on the bottom of the crucible, what is the origin of the soot? How will this soot collection affect x? x is the mols of waters of hydration
*Sunday, February 23, 2014 at 7:16pm*

**college chemistry**

A certain metal crystallizes in a face-centered cubic arrangement and has a density of a density and atomic radius of 12.41 g/cm3 and 134.5 pm, respectively. Which element below is it?
*Sunday, February 23, 2014 at 2:43pm*

**college math **

CalJuice Company has decided to introduce three fruit juices made from blending two or more concentrates. These juices will be packaged in 2-qt (64-oz) cartons. One carton of pineapple-orange juice requires 8 oz each of pineapple and orange juice concentrates. One carton of ...
*Sunday, February 23, 2014 at 2:38pm*

**college math **

Acrosonic manufactures a model G loudspeaker system in Plants I and II. The output at Plant I is at most 800/month, and the output at Plant II is at most 600/month. Model G loudspeaker systems are also shipped to the three warehouses—A, B, and C—whose minimum monthly...
*Sunday, February 23, 2014 at 2:37pm*

**college math HELP!!!!!**

Acrosonic manufactures a model G loudspeaker system in Plants I and II. The output at Plant I is at most 800/month, and the output at Plant II is at most 600/month. Model G loudspeaker systems are also shipped to the three warehouses—A, B, and C—whose minimum monthly...
*Saturday, February 22, 2014 at 7:11pm*

**college math HELP!!!!!**

CalJuice Company has decided to introduce three fruit juices made from blending two or more concentrates. These juices will be packaged in 2-qt (64-oz) cartons. One carton of pineapple-orange juice requires 8 oz each of pineapple and orange juice concentrates. One carton of ...
*Saturday, February 22, 2014 at 7:10pm*

**college math HELP!!!!!**

Sharon has a total of $190,000 to invest in three types of mutual funds: growth, balanced, and income funds. Growth funds have a rate of return of 12%/year, balanced funds have a rate of return of 10%/year, and income funds have a return of 6%/year. The growth, balanced, and ...
*Saturday, February 22, 2014 at 7:08pm*

**College math HELP!!!!!**

A financier plans to invest up to $450,000 in two projects. Project A yields a return of 10% on the investment, whereas Project B yields a return of 15% on the investment. Because the investment in Project B is riskier than the investment in Project A, the financier has ...
*Saturday, February 22, 2014 at 7:07pm*

**college chemistry**

After 94.995 seconds the concentration of A was reduced from 0.3688 M to 0.1464 M. What is the first order rate constant?
*Saturday, February 22, 2014 at 5:52pm*

**college chem**

Determine the rate of consumption of I− if the initial concentration of IO3− was 0.6634 M and decreased to 0.5745 M after 0.3964 hours. Use the reaction below. IO3− + 5I− + 6H+ ↔ 3I2 + 3H2O
*Saturday, February 22, 2014 at 1:01pm*

**economics**

1.. Suppose that U(x; y) = min(x; y) with px = 1 and py = 1. Describe and illustrate the income and substitution effects of an increase in the price of good y. What does this imply about a tax imposed on good y.. 2.. Let U(x; y) = 5x:8y:2 showing all derivation work, find: (a...
*Friday, February 21, 2014 at 8:29pm*

**college chemistry**

Rubidium metal, Rb, crystallizes in a body-centered cubic arrangement. What is the radius of one atom of Rb, if its density is 1.5320 g/cm3?
*Friday, February 21, 2014 at 1:27pm*

**College Algebra**

Find the present value of $100,000 if interest is paid at a rate of 8% per year, compounded monthly, for 5 years.
*Thursday, February 20, 2014 at 12:03am*

**College Chemistry**

If a 375 mL sample of water was cooled from 37.5°C to 0°C, how much heat was lost (in joules)
*Wednesday, February 19, 2014 at 7:44pm*

**College Chemistry**

A 150.0 mL sample of a 1.50 M solution of CuSO4 is mixed with a 150.0 mL sample of 3.00 M KOH in a coffee cup calorimeter. The temperature of both solutions and the calorimeter was 25.2°C before mixing and 31.3°C after mixing. The heat capacity of the calorimeter is ...
*Wednesday, February 19, 2014 at 7:43pm*

**Math**

A college student is using the following model to determine the total number of text messages she will have in the inbox in her cell phone, if she does not delete any of the current messages or future messages she receives in the next x days. In the model, y represents the ...
*Wednesday, February 19, 2014 at 3:32pm*

**Help finding a good speech topic**

I am going to be giving an informative speech on a news article. The news article is suppose to be able to at least somewhat relate to college students and should also be about something new, interesting, or novel. Preferable something I could easily talk about for five ...
*Wednesday, February 19, 2014 at 7:29am*

**stastistics**

Create a one sample t-test comparing the age of the general population of college students in traditional on-ground universities. Assume the population mean is 21. The numbers are 15, 16, 14, 13, 12, 17, 18,19,11, and 10.
*Tuesday, February 18, 2014 at 10:04am*

**college chemistry**

The solubility of Ar in water at 321.9 torr is 0.02538 g/L. What is Henry's Law constant (M/atm) for Ar in water?
*Monday, February 17, 2014 at 12:34pm*

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