Use the periodic table to answer this question. How many moles of He are in 16 g of the element?
A 4.0 mol
B 1.0 mol
C 8.0 mol
D 16 mol

A. 4.0 mol

Explanation:

Divide 16 g by the molar mass of He, which is 4.0 g/mol.

16 g / 4.0 g/mol = 4.0 mol

the volume of fluid displaced would equal the volume of the gas. use a gas syringe - this is a laboratory instrument that can be used to withdraw a certain volume of gas from a closed system or to measure the volume of gas from a chemical reaction.