How much calcium is present in
I. 20g CaCO3
II. 50g CaSO4
III. 10g Ca3(PO4)2
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Answer to (1) 8g
Explanation: first obtain RFM of CaCO3
Ca-40,C-12,O-16*3 when you sum RFM equal to 100g.
Then using first principal
100g of CaCO3 contain 40g of Ca
20g of CaCO3 will contain (40/100)*20 g
=8g of Ca
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