Question

calculate the number of oxygen atoms in 50g of CaCo_3

Answer 1

no. of moles = given wt / molecular wt = 50/100= 0.5moles

molecular wt of CaCO3 = 40+ 12 +(3x16) = 100 g

100g of CaCO3 have = 3x 6.023x10^23 no. of atoms

50g of CaCO3 will have= 3x6.023x10^23 x0.5

and wt of oxygen in 100g of CaCO3 = 48 grams

so wt of oxygen in 50 g of CaCO3= 48/2= 24grams...

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Answer 2

Explanation:

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