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Questions Asked on February 15, 2010

What is the freezing point of a solution that contains 10.0 g of glucose (C6H12O6)in 100.g of H20? Kf for water is 1.86C/m.
1. 4 answers
2. asked by Lisa
3. 7,347 views
What volume of methanol is formed if 2.86×10^11 of methane at standard atmospheric pressure and 25 degree celcius is oxidized
1. 5 answers
2. asked by beeni
3. 5,938 views
please Write a short essay comparing the ways in which command economies and market economies affect a worker's life?or if you
1. 15 answers
2. asked by nick
3. 4,909 views
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reactionCaCO3 ---> CaO + CO2 How
1. 7 answers
2. asked by beeni
3. 4,381 views
Consider the following reaction:2H2S+SO2=S(s)+H2O A reaction mixture initially containing 0.500M H2S and 0.500M SO2 was found to
1. 2 answers
2. asked by bf
3. 4,303 views
Why is it that the reward for capital is interest? I don't get how the business is rewarded interest, isn't it the banks?
1. 6 answers
2. asked by Johnny
3. 3,788 views
A 2.5 kg block of ice at a temperature of 0.0 degrees Celcius and an initial speed of 5.7 m/s slides across a level floor. If
1. 2 answers
2. asked by mike
3. 3,738 views
It is estimated that uranium is relatively common in the earth’s crust, occurring in amounts of 4 g/metric ton. A metric ton
1. 1 answer
2. asked by Leo
3. 2,983 views
consider the reaction in which 410 grams of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement
1. 3 answers
2. asked by need help
3. 2,675 views
A triangular number is a number that can be represented by dots arranged in a triangular shape. The first four triangular
1. 2 answers
2. asked by Marie
3. 2,244 views
I need help with the follwing question:Give an example of a column A and a column B such that B is functionally dependent on A.
1. 2 answers
2. asked by John
3. 2,202 views
A 10.0% by mass H2SO4(aq) solution has a density of 1.07 g·cm-3.How many milliliters of solution contain 8.34 g of H2SO4? What
1. 3 answers
2. asked by Cairy
3. 1,941 views
Determine whether the given conditions are sufficient to prove that ∆PQR ∆MNO.Justify your answers. PQ≅MN,PR≅MO,QR≅NOI
1. 1 answer
2. asked by C
3. 1,938 views
Triangle RST, RS = 30 centimeters, measure of angle T = 105, and measure of angle R = 40. Find the area of triangle RST, to the
1. 1 answer
2. asked by Priscilla
3. 1,706 views
Based on the balanced equation2Ba + O2 → 2BaO calculate the number of BaO formula units formed when 54 Ba atoms and 21 O2
1. 2 answers
2. asked by Leslie
3. 1,706 views
1.) A vapor volume of 1.17 L forms when a sample of liquid CH3CN absorbs 1.00 KJ of heat at its normal boiling point (81.1 C and
1. 2 answers
2. asked by joseph
3. 1,690 views
How much heat, in kilojoules, is evolved when a 3.70 kg sample of molten Cu freezes?The normal boiling point is 1357 K, and heat
1. 3 answers
2. asked by Andrew
3. 1,594 views
A 500 g piece of metal at 60 degrees celsius is placed in 200g of water at 22 degrees celsius contained in a coffee cup
1. 2 answers
2. asked by Matthew
3. 1,535 views
i have answered the other questions that i was requested to dobut theses ones i cant figure them out can anyone help please?
1. 1 answer
2. asked by jade.
3. 1,492 views
Could someone please help with these questions?How has history between 1865 and 1945 shaped our current society? I know that
1. 2 answers
2. asked by B.B.
3. 1,462 views
How do you express sin4x as a trigonometric function of x?
1. 1 answer
2. asked by Veronica
3. 1,382 views
Life is sometimes described as a constant struggle against the second law of thermodynamics. How do organisms succeed in this
1. 2 answers
2. asked by Paul
3. 1,338 views
Please show me how to solve this problem. A person wearing a shoulder harness can survive a car crash if the acceleration is
1. 4 answers
2. asked by mike
3. 1,323 views
A prescription calls for the 4% Pilocar with a Sig. of "gtt i OU tid". How many 15-ml bottles should be dispensed for a 90 days
1. 2 answers
2. asked by Marc
3. 1,317 views
The larger of two positive integers is five more than twice the smaller integer. The product of the integers is 52. Find the
1. 4 answers
2. asked by Camile
3. 1,305 views
The combustion of 1.00 mol of sucrose,C12H22,O11, evolves 5650 kJ of heat. A bomb calorimeter has a calibrated heat capacity of
1. 1 answer
2. asked by Andrew
3. 1,294 views
Ammeter 1 reads 0.20 A.a. What should ammeter 3 indicate? b. What should ammeter 4 indicate? Given: RA = 22-OHM RB = 13-OHM A1 =
1. 1 answer
2. asked by Priscilla
3. 1,291 views
The heat of reaction for burning 1 mole of a certain compound X is known to be -477.7 kJ. The calorimeter constant of the bomb
1. 3 answers
2. asked by Jacob
3. 1,273 views
You swing a 5.9 kg bucket of water in a vertical circle of radius 0.3 m.(a) What speed must the bucket have if it is to complete
1. 1 answer
2. asked by Bob C
3. 1,270 views
Consider a charged ring of radius 27 cm and total charge 15 nC.We are interested in the electric field a perpendicular distance
1. 2 answers
2. asked by Sandra
3. 1,233 views
I am having such a hard time in this class. Hopefully someone here can help me to understand some of what they are trying to
1. 1 answer
2. asked by Stephanie
3. 1,212 views
Midsummer Night's Dream:The fourth act opens with Bottom at center stage. What is your opinion of Bottom's character? How might
1. 1 answer
2. asked by Dan
3. 1,129 views
If a vendor charges p dollars each forrugby shirts, then he expects to sell 2000 _ 100p shirts at a tournament.
1. 1 answer
2. asked by Anonymous
3. 1,083 views
Why was the Bank War signigicant? I know it became important to farmers because it helped them to pay off loans from the Panic
1. 0 answers
2. asked by Lola
3. 1,074 views
A skydiver, who weighs 650 N, is falling at a constant speed with his parachute open. Consider the apparatus that connects the
1. 1 answer
2. asked by Max
3. 1,074 views
Calculate the concentrations of each of the following solutions.(a) the molality of chloride ions in an aqueous solution of
1. 4 answers
2. asked by Trixie
3. 1,064 views
this is a pair of antonyms with missing vowelsglybtfl
1. 4 answers
2. asked by Denice
3. 1,063 views
Based on the balanced equation2NBr3 + 3NaOH → N2 + 3NaBr + 3HOBr calculate the number of NaBr formula units formed when 126
1. 3 answers
2. asked by Josh
3. 1,048 views
Consider the following reaction:2H2S+SO2=2H20+S(s) A reaction mixture initially containing 0.500M H2S and 0.500M SO2 was found
1. 1 answer
2. asked by bf
3. 1,045 views
I still need help with this problem...Calculate the concentration of the solution the molality of hydroxide ions in a solution
1. 1 answer
2. asked by Trixie
3. 1,013 views
Hey everyone. Well the part I need help in isn't exactly the chemistry part. My assignment was to research an element, and at
1. 2 answers
2. asked by Jackie
3. 1,011 views
A 1.00% by mass MgSO4(aq) solution has a freezing point of -0.192°C. Water has a kf of 1.86 (K·kg)/mol.(a) Estimate the van't
1. 6 answers
2. asked by Trixie
3. 999 views
A race car traveling at 44 m/s is accelerated to a velocity of 22 m/s over an 11 s interval. What is the displacement of this
1. 1 answer
2. asked by Lenny
3. 984 views
40. DNA fingerprinting is used in many situations to help identify individuals. Analyze the situation below before answering the
1. 0 answers
2. asked by mysterychicken
3. 976 views
You forgot to check these other sentences. I really hope you can go through them, too!1)Can you check the following sentences
1. 1 answer
2. asked by Franco
3. 971 views
I am in need of some help. I am not looking for the answer, just the direction I need to take. I've search my text book, but I
1. 2 answers
2. asked by Jessica
3. 964 views
If you have 4.00 moles Al(aluminum), how many moles of O (oxygen)subscript 2 are needed for a complete reaction?
1. 1 answer
2. asked by Nick
3. 929 views
I need help with finding sources for my research paper. My teacher said: All of your sources should be from reputable scholarly
1. 2 answers
2. asked by pam
3. 914 views
Determine the mole fraction of acetone in a solution prepared by adding 0.456 kg of (CH3)2CO to 0.899 L of C4H8O.Molar Mass
1. 2 answers
2. asked by Shadow
3. 870 views
How did the French revolution inspired Latin America?
1. 2 answers
2. asked by Jennifer
3. 857 views
Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at
1. 3 answers
2. asked by Angelica
3. 806 views
40. DNA fingerprinting is used in many situations to help identify individuals. Analyze the situation below before answering the
1. 1 answer
2. asked by mysterychicken
3. 793 views
How to convert:cm to mm m to cm m to mm m to km km to m
1. 0 answers
2. asked by MJ
3. 786 views
A 32 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 23.2° the crate
1. 1 answer
2. asked by Bobby C
3. 764 views
A 32 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 23.2° the crate
1. 1 answer
2. asked by Bobby C
3. 761 views
I need help with finding sources for my research paper. My teacher said: All of your sources should be from reputable scholarly
1. 1 answer
2. asked by pam
3. 751 views
A baseball player slides into third base with an initial speed of 8.45 m/s.If the coefficient of kinetic friction between the
1. 1 answer
2. asked by Robert C
3. 741 views
Calculate the volume (mL) of the solute (CH3)2CO and the volume (L) of the solvent H2O that should be added to prepare 1.36 kg
1. 1 answer
2. asked by Jackie
3. 731 views
Factor the four-term polynomial.mn - 15 + 3m - 5n
1. 2 answers
2. asked by brittany
3. 717 views
polly wants to build a rectangular dog pen for her poodle. She has 24ft of fencing in 1 ft sections. What are the dimensions of
1. 7 answers
2. asked by Courtney
3. 715 views
Find the unit cell (simple, bcc, fcc), type of holes where the smaller ions are found (tetrahedral, octrahedral, cubic), and
1. 2 answers
2. asked by kooler
3. 714 views
A solution of the solute hexane and the solvent acetone that is 28.1 g hexane per 100. g solution is available. Calculate the
1. 1 answer
2. asked by bobby brown
3. 708 views
I need help on solving: How many grams of water are obtained if 487.8 grams of carbon dioxide are formed?
1. 3 answers
2. asked by Janet
3. 681 views
Prepare a post-closing trial balance at April 30, 2008 for Goode Company.You can place summation formulas to compute totals at
1. 0 answers
2. asked by j cox
3. 675 views
The magnitude of the electric field between two plates of a parallel plate capacitor is 2.4×10^5 N/C. Each plate carries a
1. 4 answers
2. asked by jane e.
3. 671 views
From the edge of the rooftop of a building, a boy throws a stone at an angle 30.0° above the horizontal. The stone hits the
1. 0 answers
2. asked by jenn
3. 663 views
How much heat is required to raise the temperature of 200 g CH3OH from 20 to 30 degrees and then vaporize it at 30 degrees. The
1. 5 answers
2. asked by joseph
3. 657 views
what is the perimeter of a regular decagon if one side measures 13.5 cm?
1. 1 answer
2. asked by Sharnice
3. 654 views
what are the literary devices in the song " if today was your last day" by nickelback?
1. 0 answers
2. asked by marissa
3. 652 views
Where on Earth? Postcards form EuropeYour neighbors, the Wiltons, have gone away on vacation to Europe. Before they left, Mrs.
1. 7 answers
2. asked by y912f
3. 652 views
Why is square root of x squared = absolute x?Is it because absolute x = -x and x?
1. 2 answers
2. asked by chris
3. 650 views
#49. It has been said that Eastern Europe is a political region more than a physical region. Would you agree or disagree with
1. 4 answers
2. asked by y912f
3. 649 views
I don't understand these two questions. Any help on how to figure this would be great. Thanks.1. Write the equation for the
1. 3 answers
2. asked by Matt
3. 649 views
Calculate the volume (L) of the solute C4H8O and the volume (mL) of the solvent C2H5OH that should be combined to prepare 5.54
1. 2 answers
2. asked by Jackie
3. 645 views
Does this look correct? Thx!Write the balanced equation for the reaction between solid copper and silver nitrate, that produces
1. 1 answer
2. asked by Kelsey
3. 645 views
Calculate the volume (mL) of the solute (CH3)2CO and the volume (L) of the solvent H2O that should be added to prepare 1.36 kg
1. 2 answers
2. asked by Jackie
3. 643 views
Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to
1. 2 answers
2. asked by Michelle
3. 640 views
how many grams of lithium metal is required in 410 grams of CA(NO3)2
1. 3 answers
2. asked by Anonymous
3. 637 views
When 0.949 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 389C is observed.Assume the solution's
1. 3 answers
2. asked by blasting
3. 634 views
Under which condition can you hold your breath longer?First breathe in as much as you can and hold your breath, and time it.
1. 2 answers
2. asked by so CONFUSED!
3. 631 views
You are given the following data.P4(s) + 6 Cl2(g) 4 PCl3(g) ΔH = -1225.6 kJ P4(s) + 5 O2(g) P4O10(s) ΔH = -2967.3 kJ PCl3(g) +
1. 0 answers
2. asked by Britni
3. 627 views
You push a box along the floor against a constant force of friction. When you push with a horizontal force of 72 N the
1. 1 answer
2. asked by Bobby C
3. 618 views
Approximately what percentage of Th Colonial population were patriots, neutral, loyalists?
1. 1 answer
2. asked by Rachel
3. 607 views
which word is a synonym of verbiage?A}terse B}wordiness C}curt D}concise
1. 1 answer
2. asked by matty
3. 606 views
Can you check the following sentences for me, please?Can you please tell me a synonym for the words in parentheses? Thank you.
1. 2 answers
2. asked by Franco
3. 606 views
Pleae help. It's urgent!10. Why did many Native people start adapting to Victorian society? a.) Was this the only way that
1. 3 answers
2. asked by John
3. 592 views
I need help with my outline for my character anaylsis. I am doing my research paper on Ethan Frome, and I can't come up with
1. 1 answer
2. asked by pam
3. 581 views
On a clear day, the Earth’s atmospheric electric field near the ground has a magnitude of 100 N/C and points vertically down.
1. 1 answer
2. asked by Amy
3. 579 views
Benzaldehyde, C6H5CHO}, has a normal boiling point of 179.0 C and a critical point at 422 C and 45.9 atm.Using a phase diagram,
1. 1 answer
2. asked by joseph
3. 578 views
A bike is hanging from a hook in a garage. You need to consider the following forces.(a) The force of the Earth pulling down on
1. 2 answers
2. asked by Max
3. 574 views
Answer the following for a face centered unit cell.r = 6.0. how do i find the following edge in terms of r, the lattice pt
1. 1 answer
2. asked by Mary
3. 574 views
A tiltmeter is a volcanic monitoring tool that measures _____.a)vibrations and tremors in the ground b)smoke plumes c)ground
1. 2 answers
2. asked by nick
3. 569 views
1. Find the angle of smallest positive measure coterminal with an angle of the given measure:a. 520 b. - 75 2. Points A (1,0)
1. 0 answers
2. asked by Priscilla
3. 562 views
How do you express these problems as single trigonometric function values or as single numbers, using identities?1.
1. 0 answers
2. asked by Jessica
3. 561 views
tenequal scores have a mean of 30. if one score is doubled, and the other nine remain the same, what is the mean of the new set
1. 1 answer
2. asked by sherene
3. 560 views
What is the identity element for multiplication? What is the multiplicative inverse of 4? of 0.1? What is the familiar name for
1. 1 answer
2. asked by amber
3. 557 views
A 893 g sample of a solution of the solute (CH3)2CO in the solvent C4H8O that has a concentration of 28.6 pph by mass (CH3)2CO
1. 2 answers
2. asked by Anonymous
3. 554 views
This is a lengthy problem, but I really don't understand it. Any assistance given would be greatly appreciated.An analysis was
1. 0 answers
2. asked by Jane
3. 552 views
Use the Table of Integrals to evaluate the integral (x sine(6x^2)cos(7x^2)dx)
1. 1 answer
2. asked by ali
3. 546 views
how many grams of propane are in a 35L container at 40 degrees and 900 torr?
1. 1 answer
2. asked by Bob
3. 540 views

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