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December 20, 2014

Search: AP Chemistry--gas law questions

Number of results: 62,522

Chemistry
A hydrocarbon gas burned completely in O2 to give CO2 and H2O. It was found that 1volume of a hydrocarbon gas at STP produced 2volumes of CO2 and 3 volumes of steam at STP. What is the emperical formula of this gas? Please help me on how to work out the formula of the gas.
August 6, 2012 by Elie

chemistry
Which would produce greater number of moles of product: a certain amount of hydrogen gas reacting with oxygen gas to make water, or the same amount of hydrogen gas reacting with nitrogen gas to make ammonia? Why?
April 11, 2010 by tay

chemistry
While in Europe, if you drive 115 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 40.0 mi/gal?
December 9, 2009 by melissa

Chemistry
A sample of hydrogen gas (H2) was found to effuse at a rate equal to 6.7 times that of an unknown gas. The molecular weight of the unknown gas is __________ g/mol. Express your answer to one (tenth) decimal place.
April 22, 2010 by Camarra

Chemistry
A deep-sea diver uses a gas cylinder with a volume of 13.0 L and a content of 50.1 g of O2 and 33.4 g of He. Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 22C. I got PO= 5.82, PHe=15.5 and Ptotal=21.4 but it says that PO ...
April 29, 2010 by Anonymous

Chemistry
While in Europe, if you drive 103 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 23.0 mi/gal?
September 12, 2010 by Anonymous

chemistry
When a sample of carbon dioxide gas is at 36 degrees and 105 kpa is heated the new pressure of the gas becomes 165kpa. Determine the new temperature. Assume volume and amount of gas remain constant.
January 15, 2012 by jo

chemistry
during an effusion experiment, oxygen gas passed through a tiny hole 2.5 times faster than the same number of moles in another gas under the same conditions. What is the molar mass of the unknown gas?
July 5, 2014 by Brooklynne

chem
I am having lots of trouble with these questions: Classify each of the following reactions in as many ways as possible. (Select all that apply.) a)2 Rb(s) + Br2(g) 2 RbBr(s) you can select: -acid-base -double-displacement -gas evolution -oxidation-reduction -precipitation -...
November 29, 2010 by hannah

Chemistry
Just having some trouble with this chemistry problem.. Thanks for help! Toxic carbon monoxide (CO) gas is produced when fossil fuels such as petroleum burn without enough oxygen. The CO can eventually be converted to CO2 in the atmosphere. Automobile catalytic converters are ...
January 15, 2013 by Sara

PHYSICS
Identify the following gas compression descriptions as adiabatic, isothermal or isobaric. a. As the gas compresses, the internal energy U, decreases when the temperature decreases; the work done on the gas is greater than the heat removed from the gas: ___________________ b. ...
March 3, 2012 by GRISSELL

Science, Chemistry
A cylinder containing 11.0L of helium gas at a pressure of 165atm is to be used to fill birthday balloons to a volume of 2.50L per balloon and at a pressure of 1.10atm. What is the maximum number of balloons that can be inflated at a constant temperature? (remember that 11.0L ...
October 21, 2013 by Theresa

Chem
One of my questions asks me to find the volume of neon gas. I thought neon didn't attach with other atoms because it had a full valence shell, how would it form into a gas? What would the formula be? N2, N3 ?
July 6, 2009 by Lena

Chemistry
In the Haber-Bosch process, nitrogen and hydrogen gas are reacted under high temperature 500 degrees C and pressure 200 atm to form ammonia gas (NH3) according to the following equation: N2+3H2 = 2NH3 If 9300 L H2 gas is reacted with an excess of N2 gas at 200 atm and 500 ...
October 7, 2010 by Missy*

chemistry
While in Europe, if you drive 107 per day, how much money would you spend on gas in one week if gas costs 1.10 per liter and your car's gas mileage is 42.0 ? Assume that 1 euro=1.26 dollars
August 30, 2012 by kayla

Chemistry
While in Europe, if you drive 123km per day, how much money would you spend on gas in one week if gas costs 1.10 \rm euros per liter and your car's gas mileage is 28.0mi/gal ?
September 2, 2012 by Sanam

Chem
3Review example 5.7 and exercise 5.7. Suppose there are 2.00 moles of O2 at 1520 mmHg and 27.0 oC. Rearrange the ideal gas law and use it to determine the volume (L) of the gas. Then, find the density by rearranging the equation P(Mm) = dRT. Show all units. I put he numbers in...
October 11, 2014 by Feather

Chemistry II
17.5 mL of oxygen gas were collected at room temperature (22oC) and 100.2 kPa of atmospheric pressure. a) How many moles of oxygen gas were produced? b) What is the molar volume of the oxygen gas at the conditions in the laboratory?
September 14, 2009 by pasely

Chemistry
I got think I got the following questions almost figured, but I just want someone to make sure that I am correct. 1) The whole experiment involves using the ideal gas law to predict the molar mass of an unknown liquid. The formula is molar mass of liquid = gR(0.0821)T(...
March 28, 2014 by Sandy

Chemistry
The volume of a sample of ideal gas at 25*C is 372ml. What will be the volume of the gas if it is heated at constant pressure to 50*C? What will be the volume of the gas if it is cooled to -272*C?
October 8, 2012 by Josh

chemistry
A 1.00L sample of a gas has a mass of 1.92g at STP. What is the molar mass of the gas? (This is a question on my chemistry worksheet, and I can't find the answer in my book.)
March 4, 2008 by emily

chemistry
A chemistry experiment needed 12.45 grams of chemical to produce one liter of a gas. If Zoe wanted 24 liters of gas, how many kilograms of the chemical will she need?
May 3, 2013 by damien

chemistry
The enthalpy of vaporization of benzene, C6H6(l), is 33.9 kJ mol?1 at 298 K. How many liters of C6H6(g), measured at 298 K and 88.7 mmHg, are formed when 1.90 kJ of heat is absorbed by C6H6(l) at a constant temperature of 298 K? not sure what formulae to use, thanks! M = Q/([...
November 29, 2006 by tyler

AP Chemistry
Given: 2N2(g) +O(2) --> 2N2O(g) Kc =1.2x10^(-35) N2O4(g) --> 2NO2(g) Kc = 4.6x10^(-3) 1/2N2(g) + O2(g) --> NO2(g) Kc= 4.1x10^(-9) Calculate Kc for the reaction between one mole of dinitrogen oxide gas and oxygen gas to give nitrogen tetroxide gas.
August 17, 2011 by Matt

chemistry - hess's law (check + help)
31. Carbon monoxide reacts with hydrogen gas to produce a mixture of methane, carbon dioxide, and water. (This mixture is known as substitute natural gas.) 4CO(g) + 8H2(g) → 3CH4(g) + CO2(g) + 2H2O(_) Use the following thermochemical equations to determine the enthalpy ...
June 8, 2011 by Farah

bus/415
What is the chronological order of the major legislation that makes up the history of employment law in this country? For each law, state the social problem the law was designed to address, and discuss how employment law has affected the workplace in the last two decades.
August 17, 2010 by Shelly

business law
I need help with 10 short answer questions
October 25, 2008 by jarvis

Chemistry H
120 ml of a gas is in a flask at STP. If the gas is argon, what mass of gas is in the flask?
June 20, 2013 by c

chemistry
What is Dalton's law of partial pressures? Explain how this law relates to the fact that mountain climbers must carry tanks of oxygen when scaling high peaks.
August 4, 2008 by Dan

science- I need help!
1. How do you know when something is gas? 2. What is gas made of? [I think it's molecules and atoms?] 3. How do you know when something is matter? [I believe that when something has a mass and volume..its matter. Is that correct? 4. Is gas matter? [This question got me ...
January 23, 2008 by Jeanine

Chemistry(Please check)
1) Which statement below is incorrect if any? a)when gas is at STP, the pressure of the gas is at 1.00 atm. b)when a gas is at STP, the temperature of the gas is 25 degrees celsius c)at STP the molar volume of a gas is 22.4L d)at STP the molar volume of all gases are the same ...
January 11, 2012 by Hannah

chemistry
Most natural gas consists of about 90% methane, CH4. Assume that the solubility of natural gas at 20 C and 1 atm gas pressure is about the same as that of CH4, 0.02 g/kg water. If a sample of natural gas under a pressure of 20 atm is kept in contact with 1.00 *10^3 kg of water...
March 8, 2010 by david

chemistry
While in Europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 39.0 mi/gal? Assume that 1euro= 1.26; dollars.
September 4, 2010 by Mely

Chemistry
While in Europe, if you drive 113 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 32.0 mi/gal? Assume that 1 euro = 1.26dollars.
February 25, 2011 by Hannah

Chemistry
A 7.30-L container holds a mixture of two gases at 45 C. The partial pressures of gas A and gas B, respectively, are 0.342 atm and 0.527 atm. If 0.250 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
October 31, 2012 by Garcia

chemistry
A 8.90-L container holds a mixture of two gases at 45 C. The partial pressures of gas A and gas B, respectively, are .294 atm and .860 atm. If .100 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?
June 21, 2013 by Annie

Chemistry
A 9.00-L container holds a mixture of two gases at 43 C. The partial pressures of gas A and gas B, respectively, are 0.257 atm and 0.579 atm. If 0.110 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
October 15, 2013 by Kara

Chemistry
2 moles of ideal gas at 300K, initial volume 25 L, are compressed under an external pressure at 3600 torr. Assuming the temp and the internal energy of gas do not change, what is the entropy change of the gas? (Assume the heat flow is reversible)
November 4, 2014 by Jordan

chemistry
nitrogen gas reacts with hydrogen gas to form ammonia. The nitrogen gas is in a closed 500.0 mL flask at 751 mm HG connected to a 1.25 L flask containing the hydrogen gas at 1.21 atm pressure. Both flasks are kept at 37C. if the stopcock is opened and the gases are allowed to ...
April 10, 2013 by anonymous

chemistry urgent
hydrogen gas is collected in a bottle, and the pressure of the gas is 892 torr at 24 C. what is the pressure of hydrogen gas when the temperature decreases to 20 C? chemistry - DrBob222, Tuesday, November 30, 2010 at 1:25pm (P1/T1) = (P2/T2) Dear Dr Bob: is this a right ...
November 30, 2010 by Lynn

Chemistry
A gas occupies a volume of 40 ml at 734.8 mm and 22* C . The gas was collected over water and the water level inside the eudiometer is the same as that outside. What is the volume of dry gas at S.T.P?
June 19, 2011 by Noodle

Chemistry
a sample of helium gas has a volume of 1.25L at -125celcius and 50.0atm. the gas is compressed at 50.0 atm to volume of 325ml. what is the final temperature of the helium gas in Celcius
April 8, 2013 by Mckee

chemistry
1)A sample of CO2 gas which weighs 0.85 grams has a volume of 1.30 liters when collected at 30C. What would be the pressure of the gas sample? 2) A gas sample has an original volume of 600 ml when collected at 720 mm and 35C. If a change is made in the gas temperature which ...
April 22, 2014 by Anonymous

chemistry
To identify a diatomic gas (), a researcher carried out the following experiment: She weighed an empty 2.4- bulb, then filled it with the gas at 1.70 and 28.0 and weighed it again. The difference in mass was 4.7 . Identify the gas.
May 4, 2013 by molly

Chemistry
The reaction between bromine gas and fluorine gas to create bromine monofluoride gas has reached equilibrium. What is the effect of adding more bromine gas to the reaction chamber? More fluorine gas will be produced. More bromine gas will be produced. More bromine monofluoride...
April 25, 2012 by Rose

Chemistry
Nitrogen gas (N2) reacts with hydrogen gas (H2) to form ammonia (NH3). At 200 oC in a closed container, 1.1 atm of nitrogen gas is mixed with 2.1 atm of hydrogen gas in an otherwise empty container. At equilibrium, the total pressure is 2.2 atm. Calculate the partial pressure ...
May 3, 2012 by Jake

chemistry
Q: If the temperature is constant, what change in volume would cause the pressure of an enclosed gas to be reduced to one quarter of its original value? I think if the chance in volume increases, the pressure of the gas decreases. Q: Assuming the gas in a contain remains at a ...
March 4, 2008 by stacie

PLZ look at Chemistry Questions!!!
No chemistry questions are getting answered =(
December 6, 2010 by Chemistry!

chemistry
a 12.5 g sample of oxygen gas is added to a 25.og sample of nitrogen gas in a 25.0L'Container at 28 C. Calculate the partial pressure of each gas and the total pressure of he mixture. answer
January 9, 2013 by Anonymous

chemistry
A balloon of methane gas, CH4, has a temperature of -2 degrees celcius and contains 2.35g of the gas. What is the temperature in kelvin and how many moles of gas does the balloon contain?
May 4, 2014 by darleen

Chemistry
You have 4.271 x 102 mL of oxygen gas (O2) at 7.656 x 102 mm of Hg and 78 oC. What is the mass of the sample in milligrams? What is the ratio of effusion rates for a light gas, such as HF, to a heavy gas, such as UF4?
April 16, 2013 by Tif

chemistry
Hi, I really need help with my lab report because Im completely stuck. Its about the Ideal Gas behaviour. I am given the mass of Nano2 (0.5044g) the temperature of n2 gas (21.2 C) the temperature of water (21.9 C) the volume of n2 (186.1 ml) and the barometric pressure (753.06...
October 18, 2011 by Tamara

chemistry
While in Europe, if you drive 105km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 22.0mi/gal? Assume that 1euro = 1.26 dollars.
September 8, 2013 by randy

chemistry
While in Europe, if you drive 117km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 32.0mi/gal ? Assume that 1euro=1.26dollars.
September 13, 2013 by laken

Chemistry
While in Europe, if you drive 109km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 23.0mi/gal ? Assume that 1euro=1.26dollars.
January 30, 2014 by Taylor

chemistry
According to Raoult's law, which statement is false? a. The vapor pressure of a solvent over a solution decreases as its mole fraction increases. b. The solubility of a gas increases as the temperature decreases. c. The vapor pressure of a solvent over a solution is less than ...
March 14, 2008 by thanh

Chemistry
According to your calculations a reaction should yield 5.67 g of oxygen O2. What do you expect the volume to be at 23 degrees C and 0.985 atm? I got the all the amounts 5.67 g 23 degrees C = 296 K .985 atm And use the ideal gas law Can you help me out by starting it again
October 23, 2007 by Lauren

law
there are two kinds of law in south africa.write a paragraph in which you identify these two kinds of sources of law;name the examples of sources of law that belong to each kind;and indicate the differences betweem these teo kinds of sources of law.
March 16, 2014 by nancy

chemistry
At 22 degrees Celsius and a pressure of 755 mm Hg, an unknown gas was found to have a density of 4.52 g/L. When analyzed, the gas was found to consist of two elements: Boron at 78.1% and Hydrogen at 21.9%. What is the molecular formula of this unknown gas?
January 31, 2012 by tom

chemistry
To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 3.4-L bulb, then filled it with the gas at 1.40atm and 25.0 ∘C and weighed it again. The difference in mass was 5.5g . Identify the gas.
October 26, 2014 by Anonymous

chemistry
a 10.0L ballon contains helium gas at a pressure of 655mmHg, what is the new pressure, in mmHg, of the helium gas at 20.0L, if no change in temp or amount of gas
March 1, 2012 by shaun

chemistry
a 0.25 mol sample af neon gas at 18 C and 0.700 atm is heated to 40 C. the new gas pressure is 1.11 atm. what is the change in volumn of the neon gas?
February 4, 2013 by james

physics(gas laws)
Got a question 3. Given 325 ml of saturated gas at 760 mmHg and 25C, what would be its volume if dry at the same pressure and temperature? I got confused when I read 'if dry' Does that mean I have to subtract something out of 760mmHg? And would I used the combined gas law and...
January 27, 2008 by abby

Physical Science
What are at least twenty words and clues relate to the Gas Law?
October 18, 2010 by Aaliyah

Algebra
Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 4L, the pressure is 165 kPa(kilopascals). What is the volume when the pressure is 60 kPa?
June 7, 2011 by Rachal

chemistry
Given a balloon you have at home, to determine the barometric pressure in your area. Record the pressure below. 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. ...
June 1, 2012 by amy

chemistry
For the adiabetic expansion of an ideal gas a) does the gas do work? B) doesd the internal energy of the gas increase, decrease or remain constant? C) what happens to the temperature? Please check my answers A) yes the gas does work because it is expanding B) internal energy ...
October 2, 2014 by Nancy

chemistry
In a sealed vessel xenon tetrafluoride, XeF4, reacts with hydrogen gas to give xenon gas and hydrogen fluoride gas. What is a balanced chemical equation, including state symbols, for this reaction. thankyou.
January 3, 2009 by trigger

science: chemistry
When a sample of potassium nitrate is heated, oxygen gas is produced. This gas, collected in a 750 milliliter flask, has a pressure of 2.8 atmosphere and the temperature is recorded to be 53.6C. How many moles of oxygen gas are produced in this reaction?
July 15, 2011 by Jane Doe

Chemistry
The chemical reaction for the generation of gas in an automobile safety air bag is 2NaN3(s)→ 2Na(s)+3N2(g) What volume of gas is produced if there are 130.0 grams of NaN3 used in the reaction? (The density of nitrogen gas is 0.916 g/L.) Please show your work.
March 31, 2014 by Kayla

China
Also, I need to know if China has any speed laws? The Road Traffic Safety Law of the People's Republic of China is a law which was passed by the National People's Congress of the People's Republic of China on October 28, 2003, But if you ever visit there, you wouldn't know it...
March 28, 2007 by Cindy

Chemistry 22
1. What is the Kelvin temperature of a system in which 4.50 mol of a gas occupy 0.250 L at 4.15 atm? 2. In the lab, students generated and collected hydrogen gas according to the following equations: Zn + H2SO4---> H2 + ZnSO4 a) How many mL of hydrogen gas at STP were ...
November 29, 2010 by Ivy

chemistry
As the temperature of a gaseous substance is decreased at constant pressure, it will undergo a series of physical changes. Which is the correct sequence of physical states that will be encountered? a.Liquid, solid, gas b.Gas, solid, liquid c.Solid, liquid, gas d.Gas, liquid, ...
January 20, 2012 by erica

Chemistry
Help-I'm really confused-The barometric pressure in my area is 1014 and the temperature is 61 degrees farhenheit. I am suppose to have an imaginary balloon that contains 22 grams of carbon dioxide. Calculate the volume in liters of the balloon using the gas law constant. ...
April 21, 2010 by Robert

science
Choose the correct answer. 1. A bad smalling gas is mixed with cooking gas.so that; (a)cooking gas burns better in presence of this gas (b)it becomes odouries after buring(C)it helps detect leakage of cooking gas(D)a preevents leakage of cooking gas.
November 14, 2008 by mimo

Chemistry 11
Carbon monoxide gas reacts with oxygen gas to form carbon dioxide gas acooridng to the following equation: 2CO(g)+O2(g)--> 2 CO2(g) IF 1 mole of CO2(g) is produves, how many kilojoules of heat energy are absorbed or released ?
September 12, 2010 by Alz

Chemistry
A sample of gas confined in a cylinder with a movable piston is kept at constant pressure. The volume of the gas doubles when the temperature of the gas is changed from a. 200. K to 400. K b. 200. C to 400. C How do you know if it's kelvin or celsius? k= c + 273, by the way.
December 4, 2010 by danny123

Chemistry: please help, I am stumped
When nitroglycerin (C3H5N3O9) explodes, it decomposes into the following gases: CO2, N2, NO, and H2O. If 239g of nitroglycerin explodes, what volume will the mixture of gaseous produces occupy at 1.00 atm pressure and 2678oC? a. Write a balanced equation for the reaction. b. ...
April 28, 2014 by Suzanne

chemistry
Two gases are contained in gas bulbs connected by a valve. Gas A is present in a 56 L bulb at a pressure of 213 torr. Gas B exerts a pressure of 683 torr in a 74 L bulb. What is the partial pressure of gas B after they equilibrate once the valve has been opened? Answer in ...
November 1, 2010 by Bob

Chemistry
1.Calculate the density of oxygen, O2, under each of the following conditions: STP 1.00 atm and 20.0 ∘C 2.To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 4.3-L bulb, then filled it with the gas at 1.90atm and 20.0...
November 7, 2014 by LO

chemistry
To identify a diatomic gas (x2), a researcher carried out the following experiment: She weighed an empty 3.4L- bulb, then filled it with the gas at 1.20 atm and 22.0 C and weighed it again. The difference in mass was 4.7g . Identify the gas. Express your answer as a chemical ...
November 18, 2011 by unknown

Chemistry
When a sample of potassium nitrate is heated, oxygen gas is produced. This gas, collected in a 750 milliliter flask, has a pressure of 2.8 atmosphere and the temperature is recorded to be 53.6C. How many moles of oxygen gas are produced in this reaction? (R = 0.08205 L atm/K ...
April 16, 2014 by Brina

Chemistry
A mixture of ethane and ethene occupied 35.5 L at 1.000 bar and 405 K. This mixture reacted completely with 110.3 g of O2 to produce CO2 and H2O. What was the composition of the original mixture? Assume ideal gas behavior Im pretty sure i use dalton's law of partial pressures ...
September 19, 2012 by Drew

Chem.
I was confused. is kinetic molecular theory the same thing as ideal gas law?
April 21, 2012 by Linda

Chemistry
Determine the molar mass of each of the following gases? A. 2.90 g of gas that occupies 0.500 L at 0 C and 1.00 atm (STP) B. 1.48 G of gas that occupies 2.00 L at 0 C and 760 mmHg (STP) C. 0.726g of a gas that occupies 855 mL at 1.20 atm at 18 C? D. 2.32 G of a gas that ...
July 19, 2010 by amy

chemistry
please can someone help me with these questions? 24) Which represents the largest pressure? A) five mm Hg B) one atmosphere C) one millimeter of mercury D) one hundred pascals E) five pounds per square inch 25) What would be the new pressure if a 400 mL gas sample at 380 mm Hg...
November 9, 2009 by brandy

chemistry
the molar mass of an unknown gas was measured by an effusion experiment. it took 63s for te gas to effuse. where as nitrogen gas took 48sec. what is the molar mass of the gas? 32g/mol 37g/mol 24g/mol 16g/mol 48g/mol
June 21, 2010 by Ellie

chemistry
hydrogen gas is collected in a bottle, and the pressure of the gas is 892 torr at 24 C. what is the pressure of hydrogen gas when the temperature decreases to 20 C?
November 30, 2010 by Lynn

Chemistry
Sort each of the following events based on whether the solubility of the indicated gas will increase, decrease, or stay the same. Each phrase specifies the gas involved and the change in its environment. 1. The temperature is increased 2.the partial pressure of an anesthetic ...
January 23, 2013 by Anon

Chemistry: Please check my work!I am stumped
When nitroglycerin (C3H5N3O9) explodes, it decomposes into the following gases: CO2, N2, NO, and H2O. If 239g of nitroglycerin explodes, what volume will the mixture of gaseous produces occupy at 1.00 atm pressure and 2678oC? a. Write a balanced equation for the reaction. b. ...
April 28, 2014 by Suzanne

chem
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.2L of water upon warming from 25C to 50C . Assume that the water is initially saturated with nitrogen and oxygen gas at 25C and a total ...
January 25, 2010 by rc

Chemistry (Gas Law)
A fire extinguisher filled with carbon dioxide has a mass of 3500g. After releasing all of the CO2, the mass of the extinguisher is 2735g. What was the pressure reading on the gauge before any CO2 was released, if the volume of the extinguisher is 4.25 L and it is stored at a ...
July 20, 2013 by Anonymous

CHEMISTRY URGENT
Does anyone have a "Chemistry in Context 6th edition" by mcgraw and hill book? I don't have one and my homework is in there. Page 30, questions 5,6 & 7. If you could, type out the questions for me that would be a HUGE help.
October 25, 2013 by michelle

Chemistry
Two more questions. To prepare a sample of hydrogen gas, as studen reacts zinc w/ hydrochloric acid. The hydrogen is collected over water at 22c and the total pressue is 750 mm hg. What is the partial pressue of H2?
February 19, 2010 by Courtney Venable

physics
I have tried the ideal gas law to find the temp and Pressure so that i could then find the work but i am not getting the right answer in the end. any suggestions? 3.1 One kilogram of air in a piston-cylinder device undegoes a thermodynamic cycle composed of the following ...
June 18, 2007 by jody

chem.
What is the total pressure in of a gas mixture containing argon gas at 0.25 , helium gas at 385 , and nitrogen gas at 345 .
September 6, 2012 by katy

government
the election process is largely governed by a. state law b. federal law c. local law d. PACs b
December 27, 2007 by jere

CHEMISTRY
A sample of gas in a balloon has an initial temperature of 28 and a volume of 1360 . If the temperature changes to 86, and there is no change of pressure or amount of gas, what is the new volume, , of the gas? Express the volume numerically in liters.
April 4, 2011 by Anonymous

Chemisty
Fluorine gas can react with ammonia gas to produce dinitrogen tetrafluoride gas and hydrogen fluoride gas. This reaction is described by the following balanced equation: 5 F2 (g) + 2 NH3 (g) N2F4 (g) + 6 HF (g) What mass of hydrogen fluoride gas is produced from 135 g of ...
March 8, 2013 by Anna

LAW
Can someone please explain to me how you could tell the difference between public law and private law?
October 13, 2008 by Mae

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