Saturday

February 13, 2016
Total # Posts: 451

**Physics**

Suppose that 4.7 moles of a monatomic ideal gas (atomic mass = 8.5 × 10^-27 kg) are heated from 300K to 500K at a constant volume of 0.47 m^3. It may help you to recall that CVCV = 12.47 J/K/mole and CPCP = 20.79 J/K/mole for a monatomic ideal gas, and that the number of...
*February 9, 2016*

**Physics**

A tank holds 135 moles of argon gas (atomic mass = 6.633521 × 10^-26 kg) at a pressure of 101300 Pa and a temperature of 302K. Recall that the number of gas molecules is equal to Avagadros number (6.022 × 10^23) times the number of moles of the gas 1) What is the ...
*February 9, 2016*

**Physics**

A cylinder with a movable piston contains 14 moles of a monatomic ideal gas at a pressure of 2.26 × 105 Pa. The gas is initially at a temperature of 300 K. An electric heater adds 52600 J of energy into the gas while the piston moves in such a way that the pressure ...
*February 9, 2016*

**Analytical Chem**

Do you know what chemical equilibrium is responsible for this effect?
*February 9, 2016*

**Economics**

That link doesn't take me to concrete information to justify an answers based off my question.
*January 25, 2016*

**Economics**

I don't know. Can you help me understand that more.
*January 25, 2016*

**Economics**

Do you think a nation’s output should be distributed according to income or according to some other standard (such as basic human need)?
*January 25, 2016*

**Math**

A cake recipe calls for 2 cups of flour. You want to make 2/5 of the recipe. How many cups of flour should you use?
*January 24, 2016*

**science**

would it be synthesis?
*January 9, 2016*

**science**

An equation has carbon dioxide and water as its products, what type of reaction has taken place?
*January 9, 2016*

**apex geometry**

eat 12 apple at any given time
*January 8, 2016*

**science**

what are three of the populations in an ecosystem near you
*December 17, 2015*

**Math**

A person has $50,000 to invest. As the person's financial consultant, you recommend that the money be invested in Treasury bills that yield 4%. Treasury bonds that yield 8%, and corporate bonds that yield 12%. The person wants to have an annual income of $3960, and the ...
*December 9, 2015*

**Calculus AB**

If f(x) is continuous on the interval [4, 7], how many of the following statements are true? A. f(x) has a maximum value on [4, 7]. B. f(x) has a minimum value on [4, 7]. C. f(7) > f(4) D. lim f(x) = f(6) ᵡ¨6
*December 8, 2015*

**Finance**

Currently you own a portfolio comprised of the following three securities. How much of the riskiest security should you sell and replace with risk-free securities if you want your portfolio beta to equal 90 percent of the market beta? Stock Value/Beta A 16,400/1.06 B 20,500/1....
*December 7, 2015*

**Finance**

Currently you own a portfolio comprised of the following three securities. How much of the riskiest security should you sell and replace with risk-free securities if you want your portfolio beta to equal 90 percent of the market beta? Stock Value/Beta A 16,400/1.06 B 20,500/1....
*December 6, 2015*

**Chemistry**

A chemist prepared a solution by dissolving 52.0 g of hydrated sodium carbonate in water to a total volume of 5.00 dm3. The concentration was determined to be 0.0366 M. Determine the formula of the hydrated sodium carbonate.
*November 18, 2015*

**Feedom Similes **

I cant think of any similies about freedom can you give me some ideas
*November 11, 2015*

**low math**

A section of a boardwalk is made using 15 boards. Each board is 9 1/4 inches wide. The total width of the section is 144 inches. The spacing between each board is equal. What is the width of the spacing between each board? Write your answer in simplest form.
*November 4, 2015*

**Math word problem**

Just so that I understand, the answer should be a positive 6.17 and not negative 6.17 correct.
*October 26, 2015*

**Math word problem**

Hi Rainy, I don't have to do a number, it was just a word problem we had to just solve it. So can I use the same equations you gave?
*October 26, 2015*

**Math word problem**

Please, i need help. How much greater than -11.6 is -5.43
*October 26, 2015*

**Math**

What is the greatest six digit even number that matches all of the clues The ten thousands digit is twice the tens digit The hundred thousands digit is more than six The thousands digit can be divided by the ones digit No digit is used more than once
*September 28, 2015*

**math**

I need help with this problem: 33 1/3 of what number is 4 5/6
*September 27, 2015*

**math**

divide
*August 30, 2015*

**math**

how to do -48= 2q and 13 n/10
*August 30, 2015*

**Mathematics**

Mrs. Sheela purchased a sewing machine and made a down payment of Rs.1000. She agreed to pay Rs .60 per month thereafter for one year. If the interest Raye was 7% compounded monthly, what was the cash price of the machine?
*August 16, 2015*

**math**

line of symmetry
*May 5, 2015*

**physics**

a block weighs 200 N and is being held against a door. The coefficient of static friction between the door and the block is 0.470. What is the minimum force applied? Please show how you got it
*April 19, 2015*

**Calculus**

Correct answer is -.169
*April 6, 2015*

**math**

$1000-$800=$200 $200/$800=1/4 or 25% profit
*April 3, 2015*

**chemistry**

A 50.0 mL sample of 0.50 M HBr is titrated with 0.25 M KOH. What is the pH after the addition of 60.0 mL of KOH? A) 4.1 B) 13.4 C) 1.7 D) 2.0 E) 7.7 I'm confused on the process of solving this problem. My work so far: .050L X .50 mol/1L= .025 mol HBR .060L X .25 mol/1L= ....
*April 3, 2015*

**Chemistry**

A volume of 80.0mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.20 ∘C , what is the mass of the steel bar? Use the following values: specific heat of ...
*February 25, 2015*

**Math**

A drawer contains 20 black socks and 20 white socks. If the light is off and you reach into the draw to get your socks, what is the minimum number of socks you must pull out in order to be sure that you have a matching pair?
*February 15, 2015*

**science**

by way of negative feedback and homeostasis
*February 5, 2015*

**math**

I don't know
*February 3, 2015*

**spanish**

mrs. sue just give em the answers bro
*January 30, 2015*

**math**

Mabel is installing a square pool in her backyard and wants a circular fence to enclose the pool to create 4 grassy areas around the pool as show in the figure. If the pool is located at the coordinates (1, 5), (5, 8), (4, 1), and (8, 4), what is the amount of fencing Mabel ...
*January 4, 2015*

**Chemistry**

1.) Can you explain to me how Faraday's Constant works in electrolytic cells? (We did a lab experiment on copper wires and sulfuric acid, collecting H2 gas.) I'm not sure how to answer the question. 2.) Does copper conduct more electricity than platinum? Why or why not?
*December 9, 2014*

**MATH**

Janet dreams to go on vacation in three years. How much should she invest now so that she will have $15,000 by that time if the account earns 1 3/8% compounded quarterly?
*November 24, 2014*

**Math**

You invest $5,000 at 3% monthly for 15 years. How much interest will you earn?
*November 24, 2014*

**Math**

Tom Invested $7,000 at 6.5% interest compounded monthly. How much will be in this account after 18 months?
*November 24, 2014*

**science Help 911!!**

Orbital
*November 14, 2014*

**Physics**

A billiard ball traveling at 3.00 m/s collides perfectly elastically with an identical billiard ball initially at rest on the level table. The initially moving billiard ball deflects 30.0° from its original direction. What is the speed of the initially stationary billiard ...
*November 13, 2014*

**Chemistry**

A reaction uses 4.5 grams of oxygen and an excess of nitrogen. How many grams of dinitrogen pentoxide are produced?
*October 7, 2014*

**math**

a 20 metre length of cloth is cut into two pieces in the ratio 1:9. how long is each piece?
*October 7, 2014*

**chemistry**

What is the difference between writing a COMPLETE and an INCOMPLETE equations in a) and d)?
*October 3, 2014*

**chemistry**

a.) Write the balanced complete combustion reaction for ethane (C2H6), producing CO2 and water vapour. Make sure to include phases. Also, make sure that the stoichiometric coefficients are whole numbers and are not fractions. b.) What is the enthalpy of reaction (ΔH°...
*October 3, 2014*

**Stat**

Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance. Please help mr solve.
*October 1, 2014*

**Stat**

Thirty randomly selected students took the calculus final. If the sample mean was 89 and the standard deviation was 6.2, construct a 99% confidence interval of the mean score of all students. Assume that the population has a normal distribution. what formula do i use????
*September 30, 2014*

**business**

32,25,c
*September 25, 2014*

**Language Arts Answer check PLEASE**

Thank you so much for the help!!
*September 12, 2014*

**Language Arts Answer check PLEASE**

Ms Sue would you double check my answers please
*September 12, 2014*

**Language Arts Answer check PLEASE**

1) What can you infer from this sentence near the start of "The Story Teller"? Most of the aunt's remarks seemed to begin with "Don't," and nearly all of the children's remarks began with "Why" A) It is a long trip to Templecombe B)the...
*September 12, 2014*

**language arts**

Yep answer is D
*September 12, 2014*

**ART HELP PLEASE**

Ok D was my second choice because I don't see a use of bright colors enough to think that about this one and I don't remember about technical skill I have never done art before and with homeschooling this is tough because we get a short lesson then all these pictures ...
*September 9, 2014*

**ART HELP PLEASE**

Its a picture Called a Portrait of a Woman by Jan Mytens and the question is This piece of art is most successful if the person critiquing considers A)creativity *** B)technical skill C) Use of bright Colors D)ability to capture emotion I think A but am really unsure
*September 9, 2014*

**Science Check PLEASE**

put ** by the ones I thought correct Which of the following statements best describes the characteristics of a hypothesis, one of the steps of the scientific method? a)It is a possible answer to a scientific question *** b) It is a scientific inquiry that cannot be tested c)...
*September 2, 2014*

**Science Check answers please**

I put ** by the ones I thought correct Which of the following statements best describes the characteristics of a hypothesis, one of the steps of the scientific method? a)It is a possible answer to a scientific question *** b) It is a scientific inquiry that cannot be tested c)...
*September 2, 2014*

**English Check my answers please**

Any help please!
*September 2, 2014*

**English Check my answers please**

1. In “Raymond’s Run,” which detail supports the prediction that Squeaky will not let Gretchen win the race? (1 point) I put * marks by ones I thought Squeaky is insulted when Mr. Pearson suggests she give someone else “a break” this year. Squeaky ...
*September 2, 2014*

**chemistry**

Gallium is a metal with a wide variety of uses. Some of its applications include computer memory chips, light emitting diodes and lasers. Radioactive isotopes of gallium are used to image the human body and locate tumors. Naturally occurring gallium consists of two isotopes. ...
*August 29, 2014*

**english**

how many adjectives are in this sentence? two large oaks covered your evergreens.
*July 2, 2014*

**Science**

What is oxygen made of
*June 19, 2014*

**Biology**

How much heat is needed to raise the temperature of 20g of copper from 20 degrees celcius to 40 degrees celcius? (The specific heat of copper is 385J/Kg degrees celcius)
*June 5, 2014*

**finance**

A bond that has a $ 1,000 par value (face value) and a contract or coupon interest rate of 10.5%. The bonds have a current market value of$ 1,124 and will mature in 10 years. The firm's marginal tax rate is 34%
*May 7, 2014*

**finance**

a bond that has a $1,000 par value (face value)and a coupon interest rate of 10.1% the bonds have a current market of $1,127 and will mature in 10 years the firm marginal tax rate is 34% the cost of capital from this debt is
*May 6, 2014*

**finance**

a bond that has a $ 1,000 par value ((face value)) and a coupon interest rate of 10.1% the bonds have a current market value of $1,127 and will mature in 10 years the firm's marginal tax rate is 34% the cost of capital from this debt is %
*May 6, 2014*

**consumer math**

A person selecting a bank will consider how convenient it is, how safe it is, and how secure their return is true false
*April 30, 2014*

**math**

so we are looking at 24 times an outcome of 5 can be expected?
*April 25, 2014*

**math**

The table below shows the results of an experiment in which a number cube was tossed 20 times. Outcome of toss: 1 2 3 4 5 6 Number of times Outcome Occurred: 4 1 5 5 2 3 (table reads: outcome of toss 1=4number of times,2=1,3=5,4=5,5=2,and6=3) Based on these results, if the ...
*April 25, 2014*

**physics **

Mary is standing at a place such that she makes an angle of 42° to the right of the normal of a mirror. Where should Mary's mom stand so that she can best see Mary's reflection in the mirror?
*April 9, 2014*

**math**

Jim paid $ 5.55 for 1 notepad and 7 pencils. Anne paid $ 12.28 for 3 notepads and 2 pencils. How much does each notepad cost? Show all work. Thanks
*April 7, 2014*

**math**

you have a 2.5 od pipe can you get the same flow from two 1.and a quarter od pipe
*March 29, 2014*

**physics**

What is the pressure that is exerted by a box tjat has a dimension of 12cm long and 14cm wide and has a force of gravity on the box of 40N?
*March 25, 2014*

**chemistry**

How do I determine how many moles of KMnO4 it takes to neutralize C2O4-?
*March 25, 2014*

**math**

simplifies (8+12)5/6-5A+11
*March 18, 2014*

**Algebra**

Solve using FOIL (y-2) (3y3-5y+7)
*March 17, 2014*

**algebra**

(4a2+9b5) - (-2a2-6b5)
*March 17, 2014*

**math**

5, 6
*March 17, 2014*

**algebra**

Evaluate each polynomial for the given value of the variable. –x2-5x+6; x= -3 2x2-4x-1; x= 5
*March 16, 2014*

**algebra**

Simplify (x^3y^4/z^6)^2 (a^0b^6)^0 (-2x)^-6 (4^2)^3 (x/3)^4
*March 16, 2014*

**math**

Two sides of an equilateral triangle have lengths x+2 and -2x+20 which could be the length of the third side:14-x or 2x+4? A. 14-xonly B. Both 14x and 2x+4 C. 2x+4 only. D. Neither 14-x nor 2x+4
*March 10, 2014*

**algebra**

Stacy wants to build a triangular sand box for her son. Using the figure below, calculate the area of the triangular box, writing the answer as a polynomial. (Hint: A=1/2bh) x+2 7x-1 2x+6
*March 9, 2014*

**algebra**

Sam needs to fill up a box with packaging material. Use the picture below to calculate the volume of the box. 2x+3 x-3 x+2
*March 9, 2014*

**algebra**

Add polynomials (4y+5y2) + (2y3-8y2)
*March 9, 2014*

**algebra**

. Victoria wants to plant a vegetable garden in the shape of a square. She has a space allocated in her backyard that will accommodate 175 square feet. Using the drawing below, use the FOIL method to find the polynomial that represents the area of the square. If x=6, will she ...
*March 9, 2014*

**algebra**

John wants to hire an editor to check his thesis paper. The editor charges a flat rate of $50 and $2 per page. Write a polynomial to describe the cost. Find the cost of editing 75 pages.
*March 9, 2014*

**algebra**

Is (x+y)2 equal to (x2+y2)? Explain why or why not using an example to support your answer.
*March 9, 2014*

**algebra**

(5.2 x 1013) (7.1 x 10-22) write the answer in scientific notation
*March 9, 2014*

**MAT-134 Math XL**

Factor out the greatest common factor. Simplify if possible. 9x^6-63x^5+36x^4=
*March 6, 2014*

**MAT-134 Math XL**

factor out the gcf simplify if possible. 3x^7 - 9x^6 + 24x^5
*March 5, 2014*

**algebra**

Mary has a total of $5000 invested in two accounts. One account pays 5% and the other 8%. Her interest in the first year was $331. Write and solve a system of equations to find out how much she has invested in both accounts.
*March 4, 2014*

**Algebra**

Terry is mailing two boxes. Together they weigh 21 lbs. If the smaller box is 5 lbs. less than the larger one, how much does each box weigh? Write and solve an equation that models this scenario.
*March 4, 2014*

**algebra**

The sum of two numbers is 30 and their difference is 2. Find the two numbers by writing and solving a system of equations.
*March 4, 2014*

**algebra**

A music concert was attended by 450 people. Adult tickets sold for $70 and children’s tickets for $40. If total sales were $27,750, how much of each ticket was sold?
*March 3, 2014*

**algebra**

Rachel has 15 coins with a value of $2.85. If the coins are either dimes or quarters, how many of each coin does she have? Write and solve using a system of equations
*March 3, 2014*

**algebra**

x=6y+2 3x-18y=4
*March 1, 2014*