Question: A 20-cm-diameter cylinder that is 40 cm long contains 50 g of oxygen gas at 20C. a. How many moles of oxygen are in the

A 20-cm-diameter cylinder that is 40 cm long contains 50 g of oxygen gas at 20°C.
a. How many moles of oxygen are in the cylinder?
b. How many oxygen molecules are in the cylinder?
c. What is the number density of the oxygen?
d. What is the reading of a pressure gauge attached to the tank?

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