Sunday

May 24, 2015

May 24, 2015

Total # Posts: 81,702

**chemistry ap**

My balanced eq is 2Al + 6HCl - 2AlCl3 +3H2 so moles of H2 at STP will be 3x22.4 right?
*April 3, 2015*

**chemistry**

Solid iron(III) hydroxide decomposes to produce iron(III) oxide and water vapor. 1.09 L of water vapor is produced at STP. How much iron(III) hydroxide was used? in g.
*April 3, 2015*

**chemistry**

3.58 gram sample of an unknown gas is found to occupy a volume of 2.37 L at a pressure of 808 mm Hg and a temperature of 60 oC. What is the molecular weight?
*April 3, 2015*

**social studies**

Andrew Jackson's specie circular of 1836 stipulated that after August 15 only _______ would be accepted in payment for public lands. A. gold B. gold and silver C. special banknotes D. silver
*April 3, 2015*

**Chemistry **

Can someone help me with this question? Calculate the work for each of the following processes beginning with a gas sample in a piston assembly with T=305 K, P=1.79 atm, and V=4.29 (a) irreversible expensing against a constant external pressure of 1.00 atm to a final volume of...
*April 3, 2015*

**Maths**

Here is a list of what you need to make 20 buns: - 100g butter - 150g flour - 200g sugar - 4 eggs Work out what you need to make 30 buns Please help. Thank you x
*April 3, 2015*

**calculus**

A rectangular area is to be enclosed and divided into thirds. The family has $400 to spend for the fencing material. The outside fence costs $10 per running foot installed, and the dividers cost $20 per running foot installed. What are the dimensions that will maximize the ...
*April 3, 2015*

**Art**

Was it C??
*April 3, 2015*

**Art**

This painting is called "Girl in a Southern German Folk Costume" 1. How did the designers of this German folk dress use the principles of art? A. The designer repeats colors throughout the apron to create unity B. The designer uses different colors to create ...
*April 3, 2015*

**chemistry**

If a solution is made 0.080 M in Mg(NO3)2, 0.075 M in aqueous ammonia, and 3.5 M in NH4NO3, will Mg(OH)2 precipitate? What is the pH of this solution?
*April 3, 2015*

**math**

If y varies inversely as x, and y = 12 when x = 6, what is K, the variation constant? A. 1⁄3 C. 72 B. 2 D. 144
*April 2, 2015*

**Math**

You work 40 hours/week for 52 weeks and are given the option to be paid hourly or to go on salary. In which situation will you earn the most? • $30,000/year • $15.00/hour • $30,000/year with a 10% bonus • $15.00/hour and a $2,000 bonus at the end of the year
*April 2, 2015*

**math**

please help
*April 2, 2015*

**math**

Rich gave her his 1/6 after he received her 1/4. Please help
*April 2, 2015*

**Math**

For question 10 here: hs.lindenwold.k12.nj.us/ourpages/auto/2009/6/5/49719605/Chapter%2012%20Review.rtf I have these answer choices: a. glide reflection symmetry b. no symmetry c. glide reflection and translation symmetry d. translation symmetry Is answer C correct?
*April 2, 2015*

**Science**

State how matter moves through the biosphere. State how energy moves through the biosphere. Explain each statement using examples to illustrate your explanation.
*April 2, 2015*

**algebra**

A train leaves Buffalo traveling west at 60 miles per hour. An hour later, another train leaves Buffalo traveling east at 80 miles per hour. When are the two trains the same distance from Buffalo? Show the equation you use.
*April 2, 2015*

**Algebra help Will only take a minute**

5 • 3ⁿ a.15,30,45,60 b.5,15,45,135 c.0,15,45,135 d.15,45,135,405 Thanks!
*April 2, 2015*

**math**

The sum of two numbers is 33. The sum of the smaller and 3 times the larger is 81. Find the numbers.
*April 2, 2015*

**Math**

2x^5-4x^4-6x,x^5+x^4-3x^3-3x^2
*April 2, 2015*

**Social Studies**

If question 1 is about DURING the War, your answer is wrong. All the others seem to be correct.
*April 2, 2015*

**Social Studies**

If question 1 is about DURING the War, your answer is wrong. All the others seem to be correct.
*April 2, 2015*

**Social Studies**

If question 1 is about DURING the War, your answer is wrong. All the others seem to be correct.
*April 2, 2015*

**Physics **

How are lights in schools usually wired... Series or parallel circuits?
*April 2, 2015*

**MATH**

.In <ABC, <A=60,<B=70,<C=50. Points D , E ,F are the mid-pointsmof the sides BC ,AC and AB respectively. Find the measures of the angles of the triangle formed by joining the mid-points of the sides of <ABC.
*April 2, 2015*

**MATHS**

In the given figure, O is the center of the circle and <AOB=110degree find the value of XYZ.
*April 2, 2015*

**Calculus**

Use implicit differentiation to differentiate y=x^(8/37), by writing it as y^37=x^8. Express your answer only in terms of x.
*April 2, 2015*

**Algebra**

Thanks for trying to help. The answer was (3t^1/2+5)(3t^1/2 -5).
*April 1, 2015*

**calc**

Gravel is being dumped from a conveyor belt at a rate of 30 ft3/min. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 21 ft high?
*April 1, 2015*

**calculus**

Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 7.5 mi2/hr. How rapidly is radius of the spill increasing when the area is 10 mi^2?
*April 1, 2015*

**Calculus **

Use implicit differentiation to differentiate y=x8/37, by writing it as y37=x8. Express your answer only in terms of x.
*April 1, 2015*

**chemistry**

Aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water . Suppose 4.05 g of hydrobromic acid is mixed with 0.86 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction...
*April 1, 2015*

**Chemistry **

What would be the procedure for titrating a beverage to determine the concemtration of weak acid? What reagents would be needed? What appropiate measurements and observations must be made?
*April 1, 2015*

**Algebra II**

Logarithms The brightness of an astronomical object is called its magnitude. A decrease of five magnitudes increases the brightness exactly 100 times. The sun is magnitude -26.7, and the full moon is magnitude -12.5. The sun is about how many times brighter than the moon?
*April 1, 2015*

**Art**

I think C! but im not sure! please help!
*April 1, 2015*

**physics**

For a) you have to integrate the linear mass density equation, then solve for the length given. ans=.0204 kg I still haven't figured out b
*April 1, 2015*

**Reed**

Thank You thank You so much! I will fix them! Thanks!!!!!!!!!!!!!!!
*April 1, 2015*

**Reed**

Hey Reed u told me u will check my essay and u didn't check it so i posting in this post! PLZ remove the last post which was Yesterday cause I posted my essay there and after u check let me know. Plz don't remove this until I reply so I can see ur reply! Thanks a bunch...
*April 1, 2015*

**exponential equations**

The City of South Bay has a current population of 85 000. If the city is increasing at a rate of 7.25% per year, calculate the future population in 8 years time. Round to the nearest person.
*April 1, 2015*

**maths please help and explain**

1.simplify with the aid of a calculator Keys: " =degrees sin21"40^1+cos23"50^1
*April 1, 2015*

**Chemistry**

Can someone work this out so I can understand it better?
*April 1, 2015*

**math help needed bad**

Thank you for your help Ms. Sue.
*April 1, 2015*

**math help needed bad**

So thats all to it?
*April 1, 2015*

**Algebra Please Help**

How would I do that?
*April 1, 2015*

**Algebra Please Help**

Complete the table for the given function. x| y = x^2 + (-3) 0| 1| 2| 3| A. -3, -2, 1, 6 C. 3, 4, 7, 12 C. 0, 1, 4, 9 D. none of the above Thanks!
*April 1, 2015*

**chemistry**

B. How many moles of NaOH were delivered? C. How many Moles of weak acid were present in the solution? D. Calculate the molarity of the unknown weak acid solution Can you help me solve those problems as well.
*April 1, 2015*

**Economics**

Given a demand fxn of 20-2P and a supply fxn of -4+P for a perf. competitive market: 1. Calculate the equilibrium price and qty. (I got e. price = 4 and e. qty = 8 is that right?) 2. Calculate producer surplus, consumer surplus. (i got 8 and 4) 3. if the market becomes a ...
*April 1, 2015*

**Exponential Equations**

The Bruce’s purchased $2500 worth of GIC’s. How long, t, will it take for the investment to increase to $3500, if the interest rate is 2.75%. T= 3500/2000 =1.4 t= 1.4/1+0.0275 What do I do from here
*April 1, 2015*

**Exponential Equations**

The Bruce’s purchased $2500 worth of GIC’s. How long, t, will it take for the investment to increase to $3500, if the interest rate is 2.75%. What is the Fv and Pv
*April 1, 2015*

**SCHOOL**

SHOOL IS NOT FUN!!!!!! ..... Jk.... April Fools!!!! Have a good day everyone and please don't use jiskha to cheat. Just use it to check your answers! :)
*April 1, 2015*

**Math**

Find all the possible values of the expression. sin^-1 -(square root3/2) Ans: 4π/3 + (2π)n 5π/3 + (2π)n
*April 1, 2015*

**Finance - Loans problem**

Reiny the answer 307.33 you posted at the bottom is coming up incorrect. please if you can help i would be very grateful. A company borrows $170000, which will be paid back to the lender in one payment at the end of 5 years. The company agrees to pay monthly interest payments ...
*April 1, 2015*

**Chem **

How many grams of ice at 0°C and 101.3 kPa (standard pressure) could be melted by the addition of 0.80 kJ of heat?
*March 31, 2015*

**science**

a racer in a kayak travels a 300-meter river course at an average speed of 3 meters per second. how long does it take to complete the course?
*March 31, 2015*

**statistics**

A brewery's filling machine is adjusted to fill bottles with a mean of 31.9 oz. of ale and a variance of 0.004. Periodically, a bottle is checked and the amount of ale noted. (a) Assuming the amount of fill is normally distributed, what is the probability that the next ...
*March 31, 2015*

**Finance - Loans problem**

Can someone please explain how this problem is laid out to solve.A company borrows $170000, which will be paid back to the lender in one payment at the end of 5 years. The company agrees to pay monthly interest payments at the nominal annual rate of 7% compounded monthly. At ...
*March 31, 2015*

**Finance - Loans problem**

Please If you can. 307.33 is coming up as the wrong answer.
*March 31, 2015*

**Finance - Loans problem**

A company borrows $170000, which will be paid back to the lender in one payment at the end of 5 years. The company agrees to pay monthly interest payments at the nominal annual rate of 7% compounded monthly. At the same time the company sets up a sinking fund in order to repay...
*March 31, 2015*

**statistics**

What is the difference between alpha level and critical values?? Does the alpha level just help determine the critical value?
*March 31, 2015*

**AP Exams?**

I am in AP Chemistry and AP U.S Hisotry and I have planned on taking the tests. So far I have made an A+ in APUSH, but I an B in AP Chem. I've done kinda bad on the tests I've taken in there and I don't think I will do good on the Ap exam. I think I have a better ...
*March 31, 2015*

**Math**

would you need 90 tiles?
*March 31, 2015*

**Art help please**

1. D 2. C.
*March 31, 2015*

**Art help please**

French artist daguerre invented the camera using which creative sensibilities that were developed during his painting and set design career? A. an eye for line and form B. an eye for patterns and design C. an eye for color placement and color mixing D.an eye for composition ...
*March 31, 2015*

**Chemistry**

I am experiencing a major block.... I can't say.... 1micrometer= 1000nm 5micrometer= x..... because I'll get back the same thing So please help me, tell me the answer please.
*March 31, 2015*

**Reed**

Reed I posted my essay, sorry I just looked at it so I just posted it!
*March 31, 2015*

**reading and writing**

I think you're correct
*March 31, 2015*

**Art**

French artist daguerre invented the camera using which creative sensibilities that were developed during his painting and set design career? A. an eye for line and form B. an eye for patterns and design C. an eye for color placement and color mixing D.an eye for composition ...
*March 31, 2015*

**statistics **

If the null hypothesis is rejected at the .01 alpha level, it will be rejected at the .05 alpha level. Is this correct?
*March 31, 2015*

**english**

he is worried and grieving
*March 31, 2015*

**sonnet**

i need to write a sonnet
*March 31, 2015*

**science**

Leslie is Bb, she has brown eyes.
*March 31, 2015*

**Readin Reed plz read**

ok sorry just checked it! I am posting it now until I do not reply after you check plz do not remove cause then I won't see it! Did you know that you can text and call from an iPhone, but you can only do it with an iPod with WI-Fi! That is not so cool, so check out an ...
*March 31, 2015*

**Readin Reed plz read**

Umm.. Reed if it is ok with you I can copy and paste my essay and then u can check it then tell me and then remove it. Reed u helped me yesterday for the hook!
*March 31, 2015*

**basic programming principles**

if marital s=s then
*March 31, 2015*

**Social Studies **

What is a likely example that India supported East Pakistan's effort to gain Independence from Pakistan?
*March 31, 2015*

**Physics**

The force acts on a 1.7kg object whose initial speed is 0.44m/s and initial position is x = 0.27. Find the speed of the object when it is a the location x = 0.99m?
*March 31, 2015*

**Ethics & Social Responsibility**

Which group of people might not be fully autonomous in choosing to be a research subject?
*March 31, 2015*

**Chemistry**

What would be the consequence of competing equilibria, such as from other ingredients in an aspirin tablet in a titration lab results? What if there were several pain relievers in the same tablet? How could the error from these interferences be minimized?
*March 31, 2015*

**Calculus **

A certain magical substance that is used to make solid magical spheres costs $800 per cubic foot. The power of a magical sphere depends on its surface area, and a magical sphere can be sold for $20 per square foot of surface area. If you are manufacturing such a sphere, what ...
*March 30, 2015*

**Science help please!!**

Hi Katty! Had this question before, you are 100% correct :) Any other questions, I'll be glad to check ;)
*March 30, 2015*

**L.A**

In which sentence is the meaning of the word inarticulate best expressed? A. he impressed the audience with his inarticulate expressions B. the young girl was exceptionally animated and inarticulate. C. she had many ideas to share, but she was an inarticulate speaker*** D. the...
*March 30, 2015*

**L.A**

I think D as well
*March 30, 2015*

**L.A**

I don't think he's ashamed of anne. My other thought was D
*March 30, 2015*

**L.A **

What do you think Mr. Frank means in the passage from The Diary Of Anne Frank, act II? Passage: Annes Voice: In spite of everything, I still believe people ar really good at heart. [ Mr. Frank: ( slowly closes diary) Mr. Frank: "she puts me to shame" A. he is ashamed...
*March 30, 2015*

**american government**

3. Which of the following is true regarding senatorial courtesy? (Points : 1)
*March 30, 2015*

**Social Studies**

the answer is B
*March 30, 2015*

**Programming**

1.Do the planning and write an algorithm to solve the following problem. Prepare test data for the example to test all possibilities and draw a trace table. Sam works at a coffee company where all the employees receive a bonus of R700, except the employees in the coffee ...
*March 30, 2015*

**chemistry**

is trans-dibromoethene a proper way of labeling an alkene?
*March 30, 2015*

**Math**

What percentage of the total students chose skateboarding? Skateboarding boys=2 girls=1 A. 10% B. 20% C. 30% D. None of these Is the answer D? Thank took you
*March 30, 2015*

**Math**

The demand for a commodity generally decreases as the price is raised. Suppose that the demand for oil (per capita per year) is D(p)=800/p barrels, where p is the price per barrel in dollars. Find the demand when p=55. Estimate the decrease in demand if p rises to 56 and the ...
*March 30, 2015*

**child day care**

there is really no way to get the answer out of the little bittie book they gave us i chose this but still dont understand and i hope your not a teachers cause you are no help to any one's education bringing them down God doesnt like Ugly.
*March 30, 2015*

**Math**

Tyler earns 7$ an hour mowing lawns. Write and solve an inequality that he can use to find at least how many hours he has to work to earn 100$
*March 30, 2015*

**math**

The answer is 25 lights
*March 30, 2015*

**Reading**

Umm.. Reed if it is ok with you I can copy and paste my essay and then u can check it then tell me and then remove it.
*March 30, 2015*

**Reading**

ya u can
*March 30, 2015*

**Reading**

Does this sound good?? Did you know that you can text and call from an iPhone, but you can only do it with an iPod with Wi-Fi!
*March 30, 2015*

**Reading**

Thanks
*March 30, 2015*

**Reading**

Yes I know what a hook is, It is something that grabs the readers attention, and sorry Ms. Sue!!
*March 30, 2015*

**Reading**

Can someone plz help me????????
*March 30, 2015*