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How many atoms are present in 2 grams of...

How many atoms are present in 2 grams of calcium? (GAW of Ca is 40g)

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40 grams of Ca has `6.022xx10^(23)` atoms
2 grams of Ca has =?
Number of calcium atoms `=(2)/(40)xx6.02xx10^(23)=3.011xx10^(22)`
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