What is the mass of 0.80 moles of Mg?

Question

Chemistry

Cali Bass

25 April, 21:48

What is the mass of 0.80 moles of Mg?

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Answers (2)

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Donald Bradley · Answer 1

Here is the question with its answers:

What is the mass of 0.80 moles of Mg?

7.5 * 1023 grams

4.8 * 1023 grams

30 grams

19 grams

The correct answer is D) 19 grams

Alyson Jefferson · Answer 2

You calculate the mass (m) by multiplying the molar mass (M) with the moles (n). Molar mass (M) is found in the the periodic table.

m=n*M

n=m/M

M=m/n

n=0.80moles

M=24.3050 g/moles

m=0.80moles*24.3050 g/moles = 19.444 g