8 moles of oxygen occupies 50. mL. How many moles of oxygen would be present if the volume were 100. mL, assuming pressure and temperature remain constant?

8 moles.

Moles is the amount of oxygen and not pressure, volume or mass.

Step-by-step explanation:

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  16 moles

Step-by-step explanation:

At the same pressure and temperature, double the volume will hold double the quantity of gas. There will be 16 moles of oxygen if the volume is doubled at the same temperature and pressure.