# Chemistry

Imagine that you have a 6.00L gas tank and a 3.00L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 125atm , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.

Note: Acetylene torches are used for welding. These torches use a mixture of acetylene gas, C2H2, and oxygen gas, O2 to produce the following combustion reaction:
2C2H2(g)+5O2(g)→4CO2(g)+2H2O(g)

1. 👍
2. 👎
3. 👁
1. You have 5 O2 molecules for every 2 acetylene molecules
P V = n R T
where n (mols)is proportional to the number of molecules
so for O2
125 (6) = 5 k R T for O2
P(3) = 2 k R T for C2H2

k R T are the same for both
so
125(6/5) = P(3/2)

1. 👍
2. 👎
2. 5142

1. 👍
2. 👎

## Similar Questions

1. ### CHEM

A) a picture shows a container that is sealed at the top by a movable piston. Inside the container is a ideal gas at 1.00atm , 20.0 *C, and 1.00L. (The pic is of a 2L container which has a piston pushed downward to the 1L level.

2. ### Chemistry

Imagine that you have a 7.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure

3. ### math

When 6 gallons of gasoline are put into a car's tank the indicator goes from 1/4 of a tank to 5/8. What is the total capacity of the gas tank?

4. ### Volume

Imagine that you have an ideal gas in a 7.00L container, and that 1050 molecules of this gas collide with a square-inch area of the container at any given instant. If the volume is increased to 56.0L at constant temperature, how

1. ### Math

This week Bob puts gas in his truck when the tank was about half empty. Five days later, Bob puts gas again when the tank was about three fourths full. If Bob bought 24 gallons of gas, how many gallons does the tank hold?

2. ### math

the gas tank of a car is 2/3 full. a trip uses up 1/4 of the gas in the tank. how full is the tank at the end of the trip? please include how you got the answer, thanks

3. ### Math

Jan's gas tank is nearly empty, at 1\12 full. She doesn't have enough cash to fill the tank, but she adds enough gas to reach 2\3 full. How much gas did she add, as a fraction of the tank?

4. ### physics

A 22.0-L tank of carbon dioxide gas (CO2) is at a pressure of 9.40 105 Pa and temperature of 22.0°C. (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

1. ### Math

A car run until the gas tank is 1/8 full.the tank is then filled to capacity by putting in 14 gallons.the capacity of the gas tank of the car is........?

2. ### fractions

jan gas tank is nearly empty at 1/12 full, she does not have enough gas to fill the tank but she has enough gas to reach 2/3 fill how much gas does she need to add to fill the fraction of a tank

3. ### Math

Johns car can travel 26 miles on a gallon of gas. There are 2.5 gallons of gas in the tank. How far can jones car travel using the gas in the tank . 2.5 + 26 = 5.1

4. ### chemistry

Imagine that you have a 5.50 L gas tank and a 3.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure