07-04-2021
Chemistry

contestada

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

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11-04-2021

Answer:

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

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