# chemistry

posted by .

How many moles of gas does it take to occupy 120L at 2.3atm and 340K

• chemistry -

You will need to assume that it is an ideal gas and that 1 mole of any ideal gas occupies 22.4 litres at STP (273 K, 1 atm).

then use P1V1/T1=P2V2/T2

I would convert 120 L to STP and then compare the volume obtained with 22.4 litres as this then gives you the number of moles.

• chemistry -

I disagree with Dr. Russ's method. Use PV=nRT, where P=2.3atm, V=120L, n= unknown moles, R= .08205, T=340K.

Solve for n to get 9.9 mol gas.

Without significant figures, n=9.893536939.

## Similar Questions

1. ### chemistry

What is the density of UF6 (subscript) gas?
2. ### chemistry

How many moles of gas does it take to occupy 120 L at a pressure of 233 kPa and a temperature of 340 K?
3. ### chemistry

sample of argon gas collected at a pressure of 1.11 atm and a temperature of 28.0 oC is found to occupy a volume of 20.3 liters. How many moles of Ar gas are in the sample?
4. ### chemistry

How many moles of a gas will occupy a volume of 0.53 L at a temperature of 343 K and a pressure of 2.6 atm ?
5. ### Chemistry

What volume does 0.25 moles of oxygen gas occupy ar STP?
6. ### Chemistry

I don't really know how to go about this, Please help 1. Calculate the number of moles of the gas. Calculate the volume the gas would occupy at 100.0 C and 15.0 atm. 10.8 g He 2. Given the volume of 54.0 C and 790 torr, calculate the …
7. ### chemistry

what volume would 4.3 moles of hydrogen gas occupy at 45 degrees and 3.22 atm?
8. ### chem

Show work 1. How many moles of oxygen will occupy a volume of 2.50 liters at 121.6 kPa and 331 K?
9. ### chemistry

Ideal Mixed Gas Law problems 1. What is the pressure generated by a mixture of 25.6 g SO2 and 12.6 g Ne in a container of 72.45 L and temperature of 131 K?
10. ### chemistry

Initially a vessel is charged at 1000K with SO3 at a partial pressure of 0.5atm. At equilibrium the SO3 partial pressure is 0.2atm. Calculate the value of Kp at 1000K. 2SO3->2SO2+O2 My answer: 0.5-0.2=0.3atm SO2=0.3atm*2/2mol= 0.3 …

More Similar Questions