Which of the following will not have a mass of 10 g?

Options

A. `0*1` mol `CaCO_(3)`
B. `1*51xx10^(23)` `Ca^(2+)` ions
C. `0*16` mol of `CO_(3)^(2)` ions
D. `7*525xx10^(22)` Br atom.

Answer

C

Explanation

`0.1` mole `CaCO_(3) = 0*1xx100 = 10g`
`Ca^(2+) = (1.51xx10^(23))/(6*023xx10^(23))xx40=10g`
`CO_(3)^(2-) = 0*16xx60 = 9*6 g`
`Br = (7*525xx10^(22))/(6*02xx10^(23))xx80=10g`