# Question #ddb73

##### 1 Answer

This is a gas law stoichiometry problem because you are in conditions other than STP.

Begin by determining how many moles of

43.0 g

(16 g is the molar mass of

Convert moles

2.687 moles

Now use the moles in the ideal gas law to convert to volume at non STP values for temperature and pressure.

P = 795 mmHg / 760 mmhg = 1.04 atm

V = ???

n = 2.687 moles

R = 0.0821 atm L/mole K

T = 85 C + 273 = 358 K

PV = nRT converts to v = nrt/P

V = 2.687 moles (0.0821 atm L/mole K) ( 358 K) / 1.04 atm.

all units cancel except Liters (L)

V = 75.9 L

I hope this was helpful.

SMARTERTEACHER