What is the mass of #3.543 * 10^23# atoms of magnesium?

1 Answer
Junaid Mirza
Apr 7, 2018

#"14.3 g"#

Explanation:

Molar mass of #"Mg"# is #"24.3 g/mol"#

It means #"1 mol"# of #"Mg"# atoms weigh #"24.3 g"#

Mass of #3.543 × 10^23\ "Mg"# atoms is

#3.543 × cancel(10^23\ "atoms") × (1 cancel"mol")/(6.022 × cancel(10^23\ "atoms")) × 24.3\ "g"/cancel"mol" = "14.3 g"#

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