A steel tank with a volume of 9.583 L contains N2 gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N2 in the tank.
a.

0.002 mol

c.

0.525 mol
b.

0.018 mol

d.

1.90 mol

Question

A steel tank with a volume of 9.583 L contains N2 gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N2 in the tank.
a.
	
0.002 mol
	
c.
	
0.525 mol
b.
	
0.018 mol
	
d.
	
1.90 mol

anonymous · Answer

This appears to be an ideal gas law problem. Do you know the equation for the ideal gas law?

anonymous · Answer

No I am afraid I dont. Im clueless in chemistry.

anonymous · Answer

PV=nRT P is pressure (given) V is volume (given) n is number of moles (unknown) R is the ideal gas constant, http://en.wikipedia.org/wiki/Gas_constant (the 4th one down has the units you need) T is the temperature in Kelvins (you need to convert C to K)

anonymous · Answer

Ok hold on let me do the equation thing and then can u give me the answer so we can compare answers

anonymous · Answer

Ok i got my answer

anonymous · Answer

ok, what did you get?

anonymous · Answer

17.6

anonymous · Answer

Unfortunately, that's not one of the options. One of the options is right. What numbers did you use for each of the variables?

anonymous · Answer

Idk i am so confused right now

anonymous · Answer

PV=nRT
so
n=(PV)/(RT)

anonymous · Answer

Sorry wrong answer. i got A on that one.

anonymous · Answer

No, it's not A.
What value did you use for temperature?