What is the percent mass of calcium in a calcium supplement if 1.27-g of calcium carbonate is extracted from a 2.44-g pill?

👨🏻‍🏫 學術台化學

[匿名]

2016-03-04 11:49 pm

回答 (1)

Roger the Mole

2016-03-05 12:18 am

(1.27 g CaCO3) / 100.0875 g CaCO3/mol) x (1 mol Ca / 1 mol CaCO3) x (40.0784 g Ca/mol) / (2.44 g) = 0.208 =
20.8% Ca

👍 0 👎 0