The recommended daily dose of calcium is 1200 mg. Calcium supplements often use calcium carbonate, #CaCO_3#, as the source of calcium. What mass of #CaCO_3# should be used in a tablet so that one tablet provides the recommended daily dose of calcium?

1 Answer
Oct 24, 2016

Answer:

We need a daily dose of over 4 g calcium carbonate.

Explanation:

#"Moles of calcium"# #=# #(1200xx10^-3*g)/(40.08*g*mol^-1)# #=# #0.04008*mol#.

And thus we need #0.04008*mol# #"calcium carbonate"#, i.e. a mass of #0.04008*molxx100.09*g*mol^-1# #=# #??g#.