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How many grams are in 4.28 x 10^2 atoms of Ca?

How many grams are in 4.28 x 10^2 atoms of Ca?
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How many grams are in 4.28 x 10^2 atoms of Ca?

User FJSevilla
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2.85 grams

4.28x10^2 atoms (40.08 grams of Ca/ 6.02x10^23)

User FRiSi
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