how many grams of calcium are present in 4.25g atoms of calcium
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Weight of calcium =10 g
Atomic weight of calcium =40 g/g atom
Number of gram atoms of calcium =
40 g/gatom
10 g
=0.25 gram atoms.
The Avogadro's number is 6.023×10
23
atoms/ g atom
The number of atoms of calcium =0.25 gram atoms ×6.023×10
23
atoms/ g atom
≈1.50×10
23
atoms
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