Question

calculate the number of Oxygen atom and it's Wight is 50g of caco3​

Answer 1

Explanation:

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