How many atoms are there in 20g of calcium

1.	How many atoms are there in 20g of calcium
Answer» ANSWER: moles of Ca=weight in gram/molar MASS =20/40 =1/2 moles 1 moles of any ATOM contains 6.023x10²³ ATOMS so 1/2moles contain 3.011x10²³ atoms

Answer»

moles of Ca=weight in gram/molar MASS

=20/40

=1/2 moles

1 moles of any ATOM contains 6.023x10²³ ATOMS

so 1/2moles contain 3.011x10²³ atoms

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