Synthetic diamonds can be manufactured at pressures of 6.00 x 104 atm. If we took 2.00 liters of gas at 1.00 atm and compressed it to a pressure of 6.00 x 104 atm, what would the volume of that gas be?

Answer 1

Assuming it does not get a little hot:
P V = n R T
assume here n , R , T constant
so
P V = constant
P1 V1 = P2 V2
1 atm * 2 liters = 6 * 10^4 atm * x liters
x = (1/3)* 10^-4 liters = 0.000033333 liters = 0.033333 milliliters = not much

Answer 2

There were 2 liters :)