A gas occupies 22.4 L at STP and 9.85 L at 100.°C and 2.00 atm pressure.How many moles of gas did the system gain or lose?
A)1.36 moles gained
B)1.64 moles gained
C)0.644 moles lost
D)0.356 moles lost

Question

Quizplus · Accepted Answer

Using the ideal gas law, the initial moles at STP (22.4 L, 1 atm, 273 K) is 1 mole. At 100°C (373 K) and 2 atm, the moles are calculated using PV=nRT, resulting in approximately 0.644 moles. Therefore, the system lost 0.356 moles (1 - 0.644).

A Gas Occupies 22