16-05-2020
Chemistry

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A chemist weighed out 49.0 g of calcium. Calculate the number of moles of calcium she weighed out. Be sure your answer has the correct number of significant digits

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16-05-2020

Answer:

1.22 mol Ca

Explanation:

Molar mass (Ca)=40.1 g/mol

49.0 g* 1 mol/40.1 g ≈ 1.22 mol Ca

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