Answer:
if a 40.0-gram sample of the gas occupies 11.2 liters of space at STP? A balloon is filled with 5 moles of helium gas.
Explanation:
B
20.0928.
The average atomic mass is (90 * 19.992 + 10* 21) / 100
= 20.0928.
The higher the temperature, the faster the particles move, the lower the temperature, the slower.
