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Questions Asked on May 4, 2010

What is the pH of a solution that is 0.20 M CH3COOH and 0.10 M CH3COONa?
1. 3 answers
2. asked by curtis
3. 7,926 views
NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l)How do I calculate the oxidation states of Nitrogen and figure out if it is reduced,
1. 6 answers
2. asked by Carli
3. 5,552 views
Sodium chloride is decomposed into the elements sodium and chlorine by means of electrical energy. How many grams of chlorine
1. 4 answers
2. asked by anna
3. 5,463 views
An ideal gas has a volume of 3.0 L. If the number of moles of gas and the temperature are doubled, while the pressure remains
1. 3 answers
2. asked by jenny
3. 5,004 views
A ladder 14 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x
1. 3 answers
2. asked by peter
3. 4,847 views
Which solution will have the greatest electrical conductivity?A. 0.50MHCl B. 0.10MRbOH C. 0.50MK3PO4 D. 2.0MC6H12O6 I thought
1. 4 answers
2. asked by sh
3. 4,392 views
Geraniol is a compound found in rose oil that is used in perfumes. What is the molas mass of geraniol if its vapor has a density
1. 6 answers
2. asked by Meg
3. 3,985 views
"The probability of getting heads on a biased coin is 1/3. Sammy tosses the coin 3 times. Find the probability of getting two
1. 3 answers
2. asked by Stuck
3. 3,595 views
what would the speed of an observer be if a red(4.688x10^14Hz) traffic light appeared green(5.555x10^14Hz) to the observer?a)
1. 1 answer
2. asked by seema
3. 2,637 views
How much energy is released when 2.55kg of diethyl ether freezes?
1. 4 answers
2. asked by janny
3. 2,439 views
Two forces, F1 and F2 act on an object and the angle between them is 60 degrees. Determine the magnitude and the direction of
1. 1 answer
2. asked by Ariza
3. 2,327 views
What are the verbs in this phrase: The earth has seven continents
1. 11 answers
2. asked by Fabian
3. 2,201 views
Question 26A student completes a titration by adding 12.0 milliliters of NaOH(aq) of unknown concentration to 16.0 milliliters
1. 4 answers
2. asked by frnk
3. 1,912 views
What is the molar solubility of silver sulfide, Ag2S? (Ksp for Ag2S is 6.0 x 10^51.)
1. 1 answer
2. asked by Dan
3. 1,896 views
Tan theta 12/5 ,pi <theta<3pi/2Find sin 2theta
1. 1 answer
2. asked by Stacey grahaM
3. 1,770 views
1 methods of controlling fullness.2 what is fastening. 3 uses of fastening. 4 pictures of methods of controlling fullness. 5
1. 4 answers
2. asked by georgian
3. 1,752 views
a 14.7g ice cube is placed into 324g og water. calvulate the temperature change in the water upon complete melting of the ice.
1. 2 answers
2. asked by janny
3. 1,675 views
The graph of the function y=x^3+12x^2+15x+3 has a relative maximum at x=
1. 2 answers
2. asked by AKilah
3. 1,586 views
A ladder 14 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x
1. 1 answer
2. asked by peter
3. 1,570 views
One of my favorite home pages is coming up 404 URL Not Found on this server and it has never done that before. Could an Internet
1. 3 answers
2. asked by SurferDude
3. 1,565 views
A sheet of plywood measures 4 feet by 8 feet. Armand wants to build a dog house using one whole sheet of plywood for the floor.a
1. 1 answer
2. asked by NICK
3. 1,549 views
2. In the table below, assume a monopsonist has the marginal-revenue-product schedule for a particular type of labor given in
1. 1 answer
2. asked by Tom
3. 1,531 views
"In vase A, there are 3 red balls and 5 white balls. In vase B, there are 6 red balls and 4 white balls. Two balls are to be
1. 2 answers
2. asked by Stuck
3. 1,514 views
Calculate the molarity and mole fraction of a 2.35 m solution of acetone (CH3COCH3) dissolved in ethanol (C2H5OH). (Density of
1. 2 answers
2. asked by bob
3. 1,497 views
HOW COULD I CREATE A SENTENCE USING THREE ADJECTIVES A SUBJECT A HELPING VERB A VERB AND AN OBJECT OR A PREDICATE NOUN?? AND
1. 2 answers
2. asked by marelyn
3. 1,447 views
What is the molarity of H3O+ in a 4.97×10-2 M NH4Cl solution that hydrolyzes according to the equation.NH4+(aq) + H2O(l) =
1. 1 answer
2. asked by uci student
3. 1,386 views
For my environmental science reseaerch paper on coral reefs I wanted to copy this intro paragraph from my workbook:Coral reefs
1. 2 answers
2. asked by y912f
3. 1,368 views
(2-2i)^5find the given power write answer in rectangular form
1. 1 answer
2. asked by Stacey grahaM
3. 1,357 views
An airplane flies due north from a starting point at 234.6 mph for 40 minutes. Then turns flying 20 minutes at 252 mph in the
1. 1 answer
2. asked by jake
3. 1,334 views
Consider the following.x = e^t - 12 y = e^2t (a) Eliminate the parameter to find a Cartesian equation of the curve.
1. 1 answer
2. asked by Mike
3. 1,307 views
daniels print shop purchased a new printer for $35,000. Each year it depreciated at a rate of 5%. What will its approximate
1. 1 answer
2. asked by sophia
3. 1,288 views
What is the total gas pressure in a sealed flask that contains oxygen at a partial pressure of 0.39 atm and water vapor at a
1. 1 answer
2. asked by jerkoff
3. 1,245 views
A 0.125 gram sample if a monoprotic acid of unknown molar mass is dissloved in water and titrated with 0.1003 MNaOH. The
1. 1 answer
2. asked by janny
3. 1,231 views
Logs are stacked up in apile as shown in the figure. The top row has 15 logs and the bottom row has 21 logs. How many logs are
1. 3 answers
2. asked by Abbey(Please help)
3. 1,223 views
Quan is shopping. He can buy 2 pairs of pants and 1 shirt for $79.85 ( before tax is added). He can but 1 pair of pants and 2
1. 2 answers
2. asked by Gabriel
3. 1,196 views
A pilot wishes to reach an airport 350 Km due east from his present position. The wind is blowing from N25degreesE with a speed
1. 1 answer
2. asked by Ariza
3. 1,192 views
The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams
1. 2 answers
2. asked by katlyn
3. 1,189 views
Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve.x = sec Q y = cos Q
1. 1 answer
2. asked by Abbey
3. 1,175 views
use the calculator to find the trigonometric values. express your answers in ten-thousandths.sin 53 degrees 30 ft
1. 1 answer
2. asked by trish
3. 1,175 views
Given the location of the Alps, how might they have been both a help and a hindrance to the development of Italy?
1. 2 answers
2. asked by Tyson
3. 1,162 views
what temperature would each of the following solubility be observed?a. 50g KCL in 100g H2O b. 100g NaNO3 in 100g H2O c. 60g KNO3
1. 2 answers
2. asked by Kirby
3. 1,150 views
To raise the temperature of 5 kg of water from 20 0C to 30 0C, a 2-kg iron bar is heated and then dropped into the water. What
1. 1 answer
2. asked by Joshua
3. 1,143 views
the volume of alcohol present in 620 mL of a 40% (v/v) solution of alcohol is ______?A. 372 mL B. 40 mL C. 248 mL D. 580 mL
1. 2 answers
2. asked by Kathie
3. 1,127 views
When 0.3212g of glucose was burned in bomb calorimeter of calorimeter constant 641J/K, the temperature rose by 7.943 K.
1. 0 answers
2. asked by Nadira
3. 1,111 views
To increase the solubility of a gas at constant temperature from 1.20 g/L at 1.4atm to 2.3 g/L the pressure would have to be
1. 3 answers
2. asked by Kathie
3. 1,098 views
Dilution calculation: use the formula M1V1=M2V2How many milliliters of 12 M HCl would be needed to make 200 mL of a 1.0 M HCl
1. 1 answer
2. asked by Ana
3. 1,080 views
can you please have a moment to look at my other previous posts, thanks a lot:-)
1. 1 answer
2. asked by Sara
3. 1,066 views
Find the center, vertices, foci, and eccentricity of the ellipse.9x^2 + 4y^2 - 36x + 8y + 31 = 0 I know the center is (2,-1) For
1. 4 answers
2. asked by Abbey(Please help)
3. 1,058 views
This is my Trombone Solo poem.Please see if it's good, thanks:-) I like people Who gain knowldge from school; Not any kind of
1. 1 answer
2. asked by Sara
3. 1,051 views
A 0.150 kg particle moves along an x axis according to x(t) = -13.00 + 2.00t + 3.50t2 - 2.50t3, with x in meters and t in
1. 1 answer
2. asked by Anonymous
3. 1,042 views
use this words to write a little story...what, when, white, ship, shake, wish, them, then, think....
1. 1 answer
2. asked by shrey
3. 1,000 views
use Demoivre's Theorem to find the indicated power of the complex number. Express the result in standard form.(2+2i)^6 a=2 b=2
1. 0 answers
2. asked by Abbey(Please help)
3. 991 views
A potassium hydroxide solution has a pH of 12.90. Enough cid is added to react with half of the OH- ions present. What is the pH
1. 2 answers
2. asked by Alexa
3. 990 views
Bob mosw his lawn in 3 hours, Jane can mow the same lawn in 5 hours. How much time would it take for them to mow the lawn
1. 3 answers
2. asked by jj
3. 969 views
n2 g 3h2 g 2nh3 g + 22,000 cal Explain how the equilibrium is shifted when more nitrogen is added?
1. 2 answers
2. asked by sam
3. 965 views
use Demoivre's Theorem to find the indicated power of the complex number. Express the result in standard form.(2+2i)^6 a=2 b=2
1. 3 answers
2. asked by Abbey(Please help)
3. 961 views
The S^2- ion is a relatively strong base with an equilibrium constant of 7.7x10^-1.What is the Ka value for HS- ? I got the
1. 4 answers
2. asked by sh
3. 952 views
what pH values can be assigned to acids and bases respectively?
1. 1 answer
2. asked by Alexa
3. 931 views
What is the difference between a strong electrolyte and a weak electrolyte? Explain what makes an electrolytic solution strong
1. 1 answer
2. asked by Anonymous
3. 931 views
How o you solve 4sinxcosx=1 ???
1. 1 answer
2. asked by anonymous
3. 920 views
How many moles of carbon monoxide form at the same time that 0.337 mol CS2 forms?
1. 2 answers
2. asked by jake callienf
3. 886 views
If today is Tuesday, what integer stands for last Sunday?
1. 6 answers
2. asked by Erica
3. 865 views
basis of a right prism is a rhombus with a diagonal 8cm and 6cm.the prism height iis 12cm.find:a)the general area of prism.b)the
1. 1 answer
2. asked by Anonymous
3. 811 views
A rancher is putting up a rectangular electic fence to contain some horses. The rancher has 1200 feet of electric wire. The
1. 2 answers
2. asked by letes
3. 800 views
Describe a memorable teacher who had a significant positive effect on you.There hasn't really been any teacher in high school
1. 3 answers
2. asked by Sara
3. 798 views
I am doing a research project for Business Law 2 from Penn Foster. has anyone done th perticular assignment? i cannot figure out
1. 1 answer
2. asked by Sarah
3. 798 views
A solution is prepared by dissolving 15.6 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00 mL
1. 1 answer
2. asked by Anonymous
3. 797 views
Could someone please tell me what equations i am suppose to use to work out these problems.A capacitor in RC circuit has two
1. 3 answers
2. asked by Sam
3. 796 views
Solve the equation in the interval [0•,360•]Csc theta = 1+cot theta
1. 3 answers
2. asked by Stacey grahaM
3. 795 views
A series RCL contains 150 ohm resistor, a 1.75x10^-6F capcitor and inductance of inductor 0.035H and voltage of generator 60.0
1. 1 answer
2. asked by seema
3. 794 views
post a 150-300-word response to the following discussion question by clicking on Reply.Explain whether or not you believe
1. 2 answers
2. asked by Anonymous
3. 791 views
A boat crosses a river and arrives at a point on the opposite bank directly across from its starting position. The boat travels
1. 1 answer
2. asked by Abbie
3. 790 views
Why might scientists want to figure out a way to promote cell division in mature nerve cells?There was no info about this in my
1. 1 answer
2. asked by Sara
3. 784 views
8. Hydrogen and oxygen gas combine explosively to produce water. Write a balanced chemical equation for this process. If 10 mol
1. 1 answer
2. asked by Jimbo
3. 764 views
Find the angle Q between the two vectors.u = 10i + 40j v = -3j+8k cos <10,40,0> <0,-3,8> / sqrt1700 sqrt73 cos(-120/sqrt1700
1. 1 answer
2. asked by Abbey(Please check)
3. 763 views
Consider the wide spectrum of business organizations, ranging from gigantic corporations to working at home.Describe at least
1. 1 answer
2. asked by DC
3. 763 views
How do I write and balance this chemical equation as a double replacement reaction:K2SO4(aq) + PB(NO3)2 (aq)
1. 2 answers
2. asked by Carissa
3. 753 views
a solution is prepared using .015 L of 1.0 M HCl and .020 L of .50 M HNO3. the final volume of the solution is 1.25 L. Answer th
1. 2 answers
2. asked by Alexa
3. 752 views
How did the Industrial Revolution impacted American Society economically, socially, politically, and morally.
1. 1 answer
2. asked by Zack
3. 748 views
ind the partial pressure of oxygen in a sealed vessel that has a total pressure of 2.6 atm and also contains carbon dioxide at
1. 1 answer
2. asked by jerkoff
3. 748 views
at what temperature would the sloubility level of 50 g KCL in 100 g H2O?
1. 2 answers
2. asked by Kirby
3. 743 views
CHECK PLEASEare theses ALL complex sentences? 1.i will help you with your homework after you watch the baby. 2. jake stared at
1. 3 answers
2. asked by Sara!
3. 731 views
Hi,I just want to know if I am correct on my answer about the Great Depression and Great Leveler. I wrote, "The reason why it
1. 2 answers
2. asked by Lauri
3. 722 views
10% of a sample reacts in 25 s. If the reaction follows first order kinetics, how long would it take for half the sample to
1. 1 answer
2. asked by mandy
3. 722 views
if peter received grades of 88,83,75,and 80 on four tests in English, what is the minimum grade he has to score on the fifth
1. 1 answer
2. asked by bev
3. 717 views
what do you call a skydiver with the flu
1. 2 answers
2. asked by Pam's
3. 717 views
le samedi, je joue ou tennis avec mon per'e
1. 6 answers
2. asked by david
3. 716 views
Consider a local business whose services you frequently use. What are the maincomponents of this company's business model?
1. 0 answers
2. asked by dana
3. 715 views
A right cylinder has a radius of 3 and a height of 12. What is its surface area? If necessary, round your answer to two decimal
1. 1 answer
2. asked by josh
3. 714 views
2. Olive oil is almost pure triolein (a molecule). The molar mass of triolein is 885 g/mol. How many olive oil molecules have
1. 1 answer
2. asked by Jimbo
3. 713 views
Glycerin (C3H8O3) is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 180. g of glycerin to 321 mL
1. 0 answers
2. asked by bob
3. 710 views
What are the verbs in this phrase: Hawaii is one of the most beautiful places on earth
1. 1 answer
2. asked by Fabian
3. 701 views
Why is the incubation stage of illness of concern to day care workers?A. child in this stage require a great deal of care and
1. 2 answers
2. asked by Nicole
3. 691 views
1 what does disposal of fullness means
1. 2 answers
2. asked by georgian
3. 689 views
Supposed you have been hired as a Marketing manager in a Food Supplement Company. Your company is planning to introduce Packed
1. 1 answer
2. asked by Royal
3. 671 views
For the reaction NaOH + HCl---> H20 + NaCl where the mass of NaOH is 2g and the Volume of Hcl is 100ml with a 0.5 concentration.
1. 1 answer
2. asked by Hyde
3. 661 views
Can you check if these sentences are possible? Thank you for your invaluable help.1) Remember to pick the children up at (or
1. 1 answer
2. asked by Franco
3. 657 views
no idea what to do guys, little help please11. Answer the next three questions on the basis of the following production
1. 0 answers
2. asked by Kyle
3. 649 views
A naked person with a surface area of 1.55 meters squared and a skin temperature of 37.3 degrees is in a sauna room at T = 82.0
1. 1 answer
2. asked by Sarah
3. 647 views
The Ruby Throated Hummingbird has a resting heart rate of 250 beats per minute. When it is threatened or chased, it's heart rate
1. 1 answer
2. asked by Please help!
3. 641 views

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