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April 21, 2014

Search: AP Chemistry--gas law questions

Number of results: 136,279

chemistry
Henry's Law. P(gas) = kC But in words, at the same T and the same volume of water, then 3 x pressure means 3 x the amount dissolved or 3 x 0.25 g.
Monday, March 31, 2008 at 8:32pm by DrBob222

chemistry
Use the ideal gas law PV=nRT temps have to be in kelvins. Use the correct R (mol, liters, k, atm)
Saturday, October 16, 2010 at 12:16pm by bobpursley

Chemistry 3A
Think of Boyle's law from the three gas laws. P1V1=P2V2.you have p1, p2 and v1. then it just simple algebra solve for v2.
Monday, December 3, 2012 at 12:10am by Shawn

Chemistry
15.0 moles of gas are in a 6.00L tank at 298.15K. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300 L^2*atm/mol^2 and b=0.0430 L/mol. I found the idea gas pressure to be 61.2 atm by...
Thursday, September 13, 2012 at 7:38pm by Lori

Chemistry
1. Reactions follow the law of conservation mass.- T? 3. In a chemical equation, the material to the left of the arrow equals the material on the right.- T 8. In a single replacement reaction, sodium (Na) doesn't replace hydrogen.- F? 16. Increased pressure acting on a gas at ...
Tuesday, October 26, 2010 at 2:02pm by mysterychicken

AP Chemistry
The easy way to do this is to assign some convenient rate to SF6, then multiply that number by 1.5 to know the rate for X. Then plug into the formula for Graham's Law and calculate the molar mass of X.
Sunday, February 16, 2014 at 7:03pm by DrBob222

AP Chem
Helium gas, He, at 22 degrees C and 1.00 atm occupied a vessel whose volume was 2.54 L. What volume would this gas occupy if it were cooled to liquid-nitrogen temperature (-197 degrees celcius). What is the equation?
Sunday, November 9, 2008 at 3:57pm by Anna

AP Chemistry
My objective is to find the molar mass of a gas. Is this the correct balanced equation for magnesium ribbon reacting with hydrochloric acid to form hydrogen gas? 2Mg (s) + 2HCL (l) ----> H2 (g) + 2MgCl (aq) Also, I'm required to find the mass of the magnesium ribbon in ...
Sunday, September 23, 2007 at 1:08pm by Jake

Ap chemistry
Mine required space in the brain, they were thinking questions. There will be enough space.
Sunday, October 5, 2008 at 8:07pm by bobpursley

Chemistry
A sample of natural gas at STP is 78% CH4 and 22% C2H6 by volume. How many moles of each gas are present in 1.60L of the mixture? Assume ideal gas behavior
Wednesday, October 6, 2010 at 5:20pm by Missy

chemistry
a gas sample heated in a cylinder uses 650kJ of heat. a piston that compresses this gas does 800kJ of work. What is the change in internal energy, ^E of the gas during this process?
Tuesday, February 12, 2013 at 9:52pm by harry

Chemistry
Please help me out... The pressure of a container of fluorine gas with a volume of 1.5L is 678mmHg at 55.0*C. a. If the volume of the fluorine gas increases to 5.0L, what would be the pressure of the gas in atm? The amount and tempature of gas are consistant. b.How many grams ...
Saturday, November 19, 2011 at 8:16pm by Victor

AP Chemistry
In a fit of boredom, a chemistry teaching assistant swallows a small piece of solid dry ice (CO2). The 8.9 g of dry ice are converted very quickly into gas at 311 K. Assuming the TAs stomach has a volume of 1.5 L, what pressure is exerted on his stomach?
Wednesday, January 16, 2013 at 11:39pm by Jose

To-Ms. Writeacher
I posted 2 questions under Law. Margie answered them. Can you please look at the questions and tell me if I am right? Thank you!
Wednesday, January 24, 2007 at 3:19pm by Natasha

Chemistry
I would use the combined gas law P1*V1/T1 = P2*V2/T2 solve for T2. Temps are in Kelvins.
Thursday, February 28, 2008 at 5:34pm by bobpursley

Chemistry
using the ideal gas law i have v=5.60L, P=1.75ATM, and T=250.0 k. how many moles are there. I don't have my book with me so i can't use find the real question
Tuesday, March 4, 2008 at 9:50am by a

chemistry
Get the number of moles from the ideal gas law. Then, knowing it was 2grams, you can get the mole mass. Subtract from that the mass of an S atom, the remainder is six X masses.
Thursday, June 18, 2009 at 3:23pm by bobpursley

MATH PLEASE HELP!
According to Boyle's law, the pressure p of a compressed gas is inversely proportional to teh volume, v. If a pressure of 20 pounds per square inch exists when the volume of the gas is 500 cubic inches, what is the pressure when the gas is compressed to 400 cubic inches?
Wednesday, January 7, 2009 at 8:51pm by Roger

Gas Law Chemistry
48,48
Thursday, October 25, 2012 at 4:56pm by jn

Microeconomics: Cost of Production
An Excel spreadsheet would be very helpful for these questions I looks like you need to "plot" total production. You are given the marginal product from adding each worker. Just convert that into total production. The first .5 workers gives 13 units of production (Q). The next...
Monday, October 20, 2008 at 5:50am by economyst

Chemistry
5 orange gas particles 6 blue gas particles 3 green molecules of gas (two particles attached together) If the partial pressure of the diatomic gas is 0.390 atm, what is the total pressure?
Sunday, October 14, 2012 at 9:23pm by Anonymous

check american government
The constitution and the amendments thereto are passed by the required majorities, and are binding law. The law of this land is that the law is the law, an it is is own justification. Promises are not law.
Sunday, October 26, 2008 at 8:31pm by bobpursley

chem
See Dalton's Law of partial pressure. That law says that the total pressure is the sum of the partial pressures of each gas.
Sunday, March 30, 2008 at 5:25pm by DrBob222

AP CHEMISTRY
I hope I can. Volume goes up so pressure goes down. Increase in P make the reaction shift on the side with fewer mols GAS (solids don't count). There are two mols gas on the right, 1 mol on the left so increase P makes it go to the left. Decreasing P makes it go to the right ...
Friday, March 29, 2013 at 12:57am by DrBob222

ap chemistry
What amount of energy is required to com- pletely ionize 26.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J
Monday, April 15, 2013 at 7:02pm by cheri

Physics/Chemistry
This seems like chemistry, not physics. Use the combined gas law PV/T=PV/T and solve for T. [(0.2 x10^5 Pa)(0.8 x10^5)]/27=T
Wednesday, January 23, 2013 at 11:35pm by Devron

chemistry
Assuming pressure and temperature remain constant, what happens to the volume of a gas if the number of moles of gas is increased (gas is added)? 1) Remains the same 2) Cannot be determined 3) Increases 4) Decreases
Tuesday, April 8, 2008 at 1:18pm by aaloy

chemistry
One liter of a gas mixture at 0 degree Celsius and 108.26 kPa contains 250 mg/L of H2S gas. Calculate the partial pressure exerted by gas.
Friday, January 21, 2011 at 11:30pm by Jazmin

Chemistry
Assuming the gas is ideal, we use the formula ρ = P*MM / RT where ρ = density (g/L) P = pressure (atm) MM = molar mass (g/mol) R = gas constant = 0.0821 L-atm/mol-K T = temperature (K) Note that this formula is just derived from the ideal gas law (PV = nRT). Convert ...
Tuesday, October 15, 2013 at 12:47am by Katie

AP Chemistry
Here are some AP Chemistry tutorials for you: http://search.yahoo.com/search?fr=mcafee&p=AP+Chemistry+tutorials Sra
Sunday, April 24, 2011 at 5:02pm by SraJMcGin

ap chemistry
WHERE CAN I TAKE AP CHEMISTRY ONLINE DIAGNOSTIC TEST?
Wednesday, March 27, 2013 at 8:50pm by maria

Chemistry. Please help!
It looks OK. For the 2nd question convert the grams of CO2 to moles and use the Ideal Gas Law to find the pressure due to CO2.
Wednesday, December 3, 2008 at 5:58pm by GK

Chemistry
Convert deg. C to deg. K, then substitute into the Combined Gas Law: P1V1/T1 = P2V2/T2 Solve for V2. Your answer is not correct.
Friday, January 1, 2010 at 6:51pm by GK

practical math
assuming the gas is ideal, we can use the Charles' Law: V1 / T1 = V2 / T2 where V1 = initial volume of gas T1 = initial temp of gas V2 = final volume of gas T2 = final temp of gas substituting the values to the equation, 0.20 / 333 = V2 / 533 V2 = 0.20*533/333 V2 = 0.32 cubic ...
Tuesday, July 17, 2012 at 9:09pm by Jai

american government
i believe that a would be the correct answere due to so there would not be confusion in the law and questions can be avioded in understanding the law.
Friday, July 2, 2010 at 7:12pm by marie

Chemistry
Nitrogen Monoxide reacts with hydrogen gas to form nitrogen gas and water (vapor). (i). write a balanced equation for this reaction. (ii). The reaction is experimentally found to be (approx) first-order in H2 and second order in in NO. Write the form if the experimentally-...
Saturday, April 14, 2012 at 6:53pm by Crystal

chemistry
How many moles are in gas A? Use PV = nRT and solve for n. How many moles are in gas B? Solve for n for that gas. Now, using PV = nRT and a NEW volume (the final volume = 74L+56L = ??L) calculate the P of each gas by itself. There is a much easier way to do it. P1V1 = P2V2 for...
Monday, November 1, 2010 at 5:57pm by DrBob222

AP Chemistry
When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 5.0 M HCI is required to react completely with 3.00 g of magnesium?
Sunday, November 8, 2009 at 12:39pm by Angel

Chemistry
I forgot in my previous question to say 1014 millibars. The question is I live at 1014 millibars for barometric pressure and temp. is 61 degrees Fahrenheit. I have an imaginary balloon that contains 22 grams of CO2-what is the volume in liters of the balloon using the gas ...
Wednesday, April 21, 2010 at 9:35pm by Robert

physics
What is the container volume? How much is in it? Is it a gas? What does the 900k mean? Is that supposed to be the temperature? (If so, it should be written 900 K) This is presumably an exercise in using the ideal gas law, PV = nRT, but you need more information (You need n and...
Wednesday, July 7, 2010 at 12:23pm by drwls

chemistry
A sample of natural gas is 85.2% methane, CH4, and 14.8% ethane, C2H6, by mass. What is the density of this gas mixture at 18.0C and 771 mmHg? Assume ideal gas behavior.
Wednesday, October 31, 2012 at 5:36pm by Zoe

Business Law
Search Google for: Business Law Exam 210 True Or False questions
Saturday, March 27, 2010 at 9:49pm by Ms. Sue

Chemistry
I need a creative title for a lab report that deals with using dalton's partial pressure law in order to determine the amount of hydrogen gas that was collected over water. any ideas?
Wednesday, December 15, 2010 at 4:28pm by Jacob

AP Chem
Is that because it's a solid and not a gas?
Tuesday, February 26, 2013 at 1:31pm by Lisa

AP Chem
My best guess is, "probably not." Is Ga a solid, liquid, or gas at these conditions? It has a melting point of about 30 degrees C so that wouldn't be a gas at the conditions cited, would it (26 degrees C)? I obtained the same molar mass, at least within 0.1, as you did.
Monday, January 21, 2008 at 12:06pm by DrBob222

AP Chem
A sample of H2 is collected by displacing 145 mL of water. The pressures of the gas and the atmosphere are equalized. The atmospheric pressure is 745 mmHg. The temperature of the water and gas are identical at 26 degrees C. How many moles of H2 have been evolved?
Tuesday, November 4, 2008 at 7:44pm by Anna

physics
can i have multiple choice questions on thermodynamics: relationship between work and heat, the first law of thermodynamic, and the second law of thermodynamic
Friday, March 18, 2011 at 7:02pm by johny

chemistry
12.00 liters of oxygen gas is under a pressure of 20 mm Hg. If the volume of this gas is decreased to 2.00 liters at constant temperature, what will the new pressure be? I believe this is Boyle's law and the answer should be 120 mm Hg, but according the answer on practice test...
Tuesday, December 4, 2012 at 6:46pm by Jo

chemistry
nitrogen gas and oxygen gas combines to produce nitrogen dioxide. What amount of oxygen gas is needed to completely react with 3kg of nitrogen gas?
Thursday, November 11, 2010 at 5:27pm by tarkan

social economics
International law isn't very effective because there's not an effective police force to enforce it. An attempt to enforce international law leads to endless wars against rogue states and organizations. In the past, international law was fairly effective with the Geneva ...
Thursday, October 21, 2010 at 9:20pm by Ms. Sue

Physics plzzzzzzzzz help
so ? A Goodyear blimp typically contains 4770 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. The temperature of the helium is 274 K. What is the mass (in kg) of the helium in the blimp? This is just a case of applying the ideal gas law, n = PV/RT. You know the ...
Friday, December 1, 2006 at 1:57am by maysam

Chemistry
A McLeod gauge measures low gas pressures by compressing a known volume of the gas at constant temperature. If 315 cm^3 of gas is compressed to a volume of 0.0457 cm^3 under a pressure of 2.51 kPa what was the original gas pressure?
Thursday, April 16, 2009 at 12:09am by Anonymous

Chemistry
a tank contains a mixture of 3.0 mol of nitrogen gas, 2.0 mol of oxygen gas and 1.0 of carbon dioxide gas at 25 degrees celsius and a total pressure of 10.0 atm. Calculate the partial pressure in torr of each gas in the mixture?
Sunday, July 10, 2011 at 8:48pm by Elizabeth

AP chemistry
When a mixture of acetylene gas (C2H2) and oxygen is ignited and combusted, the reaction produces CO2 and H2O. What mass of acetylene is required to produce 150g of H2O?
Sunday, October 31, 2010 at 5:43pm by deb

ap chemistry
A sample of gas occupies 4 mL at STP. At what pressure would this sample occupy 500 mL if the temperature is changed to 525C? Answer in units of torr
Saturday, February 9, 2013 at 7:32pm by cheri

chemistry
Your balloon contains 22 grams of Carbon dioxide. Use the following link to determine the temperature in your area. and then use the following to convert to Kelvin. Record below. Given the Gas Constant R please use the ideal gas law to calculate the volume in liters of the ...
Saturday, June 2, 2012 at 1:07pm by amy

Chemistry
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.6 L of water upon warming from 25 C to 50 C. Assume that the water is initially saturated with nitrogen and oxygen gas at 25 C and a total ...
Thursday, September 17, 2009 at 8:19pm by RE

science-gas laws
I got 2 questions for ya: 1. Calculate the new pressure of an oxygen tank at 127o C if the tank had 2200 psig at room temperature (22o C)? I used Gay Lussac's law. Here's my work: P1= 2200psi P2= X T1= 295K T2= 400K (2200x295)400= X I got 2983psi Is that correct? 2. Given 320 ...
Tuesday, August 28, 2007 at 6:59pm by abby

Chemistry
"The analyzer said that at 20degreesC the unknown gas was 82.8% carbon by weight and 17.2% hydrogen. The analyzer also diffused the gas through a special apparatus and measured the rate of its diffusion compared to how fast oxygen gas diffused under the same conditions. The ...
Monday, January 17, 2011 at 6:54pm by Anonymous

Chemistry
"The analyzer said that at 20degreesC the unknown gas was 82.8% carbon by weight and 17.2% hydrogen. The analyzer also diffused the gas through a special apparatus and measured the rate of its diffusion compared to how fast oxygen gas diffused under the same conditions. The ...
Monday, January 17, 2011 at 6:54pm by Anonymous

chemistry-Gases
hmm me either ok a swimmer takes a deep breath in.....the volume of air taken into the lungs is 2.6 litres she then dives to a depth where the temperature is -11 degrees Celsius when she is out of air she swims back to the top of the ocean where the temperature is 37 degrees ...
Friday, December 10, 2010 at 4:40am by Davia

Law
I am having a hard time and very pressed for time. Thanks in advance;) Select a current or proposed law that impacts the delivery of health care or human services. FnWrite a 1,050- to 1,400-word paper in APA format that answers the following questions: What is the purpose or...
Monday, October 8, 2007 at 7:20pm by Need help before midnight...help

physics
A 22.0-L tank of carbon dioxide gas (CO2) is at a pressure of 9.40 105 Pa and temperature of 22.0C. (a) Calculate the temperature of the gas in Kelvin. K (b) Use the ideal gas law to calculate the number of moles of gas in the tank. mol (c) Use the periodic table to compute ...
Monday, April 29, 2013 at 11:01am by Annette

chemistry
Calculate the molar mass of a gas if 0.805g of this gas has a pressure of 4.00 bars at 305K in a 1 L. What is the gas density at this T and P, and what is the density at STP
Friday, September 11, 2009 at 2:07pm by john

chemistry
A gas has a density of 5.56 g/L. a. What volume in milliliters would 4.17 g of this gas occupy? b. What would be the mass in kilograms of 1 m3 of this gas?
Wednesday, September 11, 2013 at 7:19pm by elizabeth

chemistry
A gas has a density of 5.56 g/L. a. What volume in milliliters would 4.17 g of this gas occupy? b. What would be the mass in kilograms of 1 m3 of this gas?
Wednesday, September 11, 2013 at 7:20pm by elizabeth

chemistry
A gas has a density of 5.56 g/L. a. What volume in milliliters would 4.17 g of this gas occupy? b. What would be the mass in kilograms of 1 m3 of this gas?
Wednesday, September 11, 2013 at 7:21pm by elizabeth

Chemistry
1.05 g of an unknown gas at 47 C and 1.05 atm is stored in a 2.25-L flask. Density of the gas= 0.47g/L What is the molar mass of the gas?
Monday, October 22, 2012 at 10:49pm by Vid

chemistry
If the gas could took a hemispherical shape, what circular surface area would the gas cover? chemistry
Thursday, May 26, 2011 at 1:21am by John

Chemistry
Steve gave you the combined gas law, but it seems that you were confused. The gas law is as followed: P1V1/T1=P2V2/T2 Where P1=75.0 cmHg V1=500.0 mL T1=273K +(-185C)=88K P2=55.0 cmHg V2=221.0mL and T2=? Solve for T2: T2=[T1*(P2V2)]/P1V1 T2=[88K*(55.0 cmHg*221.0mL)/(75.0 cmHg*...
Friday, February 14, 2014 at 6:10pm by Devron

chemistry
A gas has a volume of 5.60 at 0. What final temperature in degrees Celsius is needed to cause the volume of the gas to change to the following, if (number of moles of gas) and are not changed?
Thursday, March 24, 2011 at 11:13pm by Anonymous

chemistry
the volume of a gas was originally 2.5 L; it's pressurewas 104kpa and its temperatire was 270K. the volume of the gas expanded to 5.3 L and its pressure decreased to 95 kpa. What is the temperature of the gas?
Tuesday, May 8, 2012 at 8:42pm by ed

Chemistry
An unknown amount of gas occupies 30.0 L at 2.1 ATM and 298K. How many moles does the sample contain? What is the mass if the gas is helium? What is the mass if the gas is argon?
Wednesday, April 10, 2013 at 1:50am by Jake

Chemistry
An unknown amount of gas occupies 30.0 L at 2.1 atm and 298K. How many moles does the sample contain? What is the mass if the gas is helium? What is the mass if the gas is argon?
Wednesday, April 10, 2013 at 11:08pm by Ryan

Chemistry
An unknown amount of gas occupies 30.0 L at 2.1 atm and 298K. How many moles does the sample contain? What is the mass if the gas is helium? What is the mass if the gas is argon?
Friday, April 12, 2013 at 1:15am by Ryan

chemistry
Butane gas, C4H10(g), is commonly used as a fuel in barbeque gas cylinders. Write a balanced chemical equation for the combustion of butane gas
Saturday, September 21, 2013 at 2:57pm by jeannet

Chemistry
Write a balanced chemical equation for nitrogen gas reacts with oxygen gas to produce nitrogen dioxide gas
Monday, March 29, 2010 at 8:32pm by Elizabeth

chemistry
Given a sufficient supply of nitrogen gas, how many moles of ammonia gas will be produced from 10.8 moles of hydrogen gas?
Sunday, April 11, 2010 at 1:32pm by jhennel

chemistry
At 650 degree C and a pressure of 690mm HG, the 0.927g sample has a volume of 194cm3. How do I calculate the volume at the same temp but at a pressure of 760mm Hg? Also, how do I calculate the volume at the same pressure but at a temp of 0 degree C? Thanks if it is a gas, you ...
Monday, February 26, 2007 at 8:08am by sarah

Chemistry
Use the Ideal Gas Law: PV = nRT Substitute: P = 0.973 atm V = Unknown. Solve for this variable. n = 0.01mol CO R = 0.0821 L.atm/K.mol [a constant] T = 9 + 273 = 282 K
Monday, July 21, 2008 at 2:39pm by GK

Chemistry
A gas has a volume of 4.00 at 0. What final temperature in degrees Celsius is needed to cause the volume of the gas to change to the following, if (number of moles of gas) and are not changed? 290 L
Tuesday, November 23, 2010 at 5:23pm by Brittany

Chemistry
What volume of hydrogen chloride gas will result when hydrogen gas is combined with 58.35 liters of chlorine gas? I need help balancing the equation also.
Saturday, March 3, 2012 at 11:19pm by doll

Chemistry
An ideal monatomic gas initially at 298 K and 1 atm pressure is expanded from a volume of 1 liter to 2 liters. Consider separately isobaric, isothermal and adiabatic expansions to accomplish this. In each case, calculate the following: a) The final temperature of the gas b) ...
Sunday, January 30, 2011 at 9:07pm by Marcus

College Chemistry
HELP ME PLEASE! 1. Calculate the weight of 16.2L of pure SO2 gas at STP. (answer in grams) a.16.2 b.31.8 c.39.5 d.46.3 e.64.1 2.A volume of 725mL of a gas is collected at 105Celsius and 745torr. The gas weighs 1.93 grams. What is the Gas? a.Fe2 b.Ar c.Kr d.Xe e.Rn
Sunday, April 4, 2010 at 3:50pm by Lynn

chemistry
How many grams of CO2 are contained in 550 mL of the gas at STP I've worked all of these questions and I'm trying to see if I'm right, and if not, where I went wrong.
Tuesday, October 19, 2010 at 7:45pm by lavonne

AP CHEMISTRY
i added info in the last question in AP CHEMISTRY
Monday, March 19, 2012 at 8:14pm by DAN

AP Chemistry
Since pressure is measured in force/area, and they have only given you two data, there's not much doubt as to what calculation to make: p = 145lb/300cm^2 = 29/60 lb/cm^2 Now, two questions for you: 1. How is this chemistry? 2. What scientist mixes English and metric units?
Friday, June 15, 2012 at 3:26pm by Steve

chem
how do you solve for the combined gas law?..i ..I am very confused ..someone help by making it easier and clear since i am kinda slow.. ex.a sample of neon gas has a volume of 752ml at 25.0C. what will the volume at 50.0C be if pressure is constant
Thursday, May 29, 2008 at 9:59pm by amie

chemistry
draw particle diagrams that account for the fact that 2 volumes of nitric oxide gas react with 1 volume of oxygen gas to form 2 volumes of product with no leftover gas
Friday, April 5, 2013 at 1:58pm by Paula

AP Chemistry
2K (s) + 2H2O (l) --> 2KOH (aq) + H2 (g) When 0.400 mole of potassium reacts with excess water at STP, what is the volume of hydrogen gas produced? the answer is 4.48 liters but I keep getting wrong numbers! please help! Thanks!
Thursday, October 2, 2008 at 1:40am by Andrew

ap chem
? I'm not sure what you mean by that... It's a noble gas if that's what you're asking.
Monday, September 1, 2008 at 9:17pm by Liz

Chemistry
Dalton's Law of Partial Pressures tells us that the total pressure in a system is the sum of the partial pressures of each gas.
Monday, April 4, 2011 at 11:30am by DrBob222

chemistry/ partial pressure
Dalton's Law--The total pressure is the sum of the partial pressures of each gas. Ptotal = PN2 + PH2O
Saturday, October 22, 2011 at 3:55pm by DrBob222

chemistry (charles law)
A 4.0L sample of methane gas is collected at 30.0 celcius .predict the volume of the sample at 0 celcius.
Sunday, April 28, 2013 at 1:05pm by ty

chemistry
Dalton's law of partial pressure says that the total pressure is the sum of the partial pressures of each gas.
Sunday, February 1, 2009 at 5:45am by DrBo222

Physics
I got a few questions that I need to be checked please? Why does a brick weigh 1 kilogram. Explain. -Would it be cause there are not other forces acting on it thats why it weighs 1 kilogram? Why do lurch foward when a bus slows down? What law is this? -Is it because the bus is...
Sunday, September 9, 2007 at 9:19pm by Soly

AP chem
i had the same problem for ap chemistry and i looked at what you wrote but could you help me with it
Wednesday, November 7, 2007 at 8:19pm by jill

Chemistry
Calculate the ratio of moles of CO2 produced to moles of the original gas mixture? A mixture of methane (CH4) and ethane (C2H6) is stored in a container at 294 mmHg. The gases are burned in air to form CO2 and H2O. If the pressure of CO2 is 351 mmHg measures at the same ...
Friday, August 13, 2010 at 2:29am by Jenny

Chemistry
Calculate the ratio of moles of CO2 produced to moles of the original gas mixture? A mixture of methane (CH4) and ethane (C2H6) is stored in a container at 294 mmHg. The gases are burned in air to form CO2 and H2O. If the pressure of CO2 is 351 mmHg measures at the same ...
Friday, August 13, 2010 at 2:29am by Jenny

Chemistry II
The mass of a particular gas is 3.562 g. If the temperature of the gas in a 126.4 mL vessel is 97.6oC, and the atmospheric pressure is 752.5 mmHg, what is the molar mass of the gas?
Tuesday, September 1, 2009 at 6:46am by Anonymous

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