Answer:
C, 0.1 mol.
Explanation:
According to the periodic table, the molar mass of Ca is 40.1, C is 12.0, O is 16.0,
so the molar mass of CaCO3 is 40.1 + 12.0 + 16.0 x 3 = 100.1
Using this formula:
no. of moles = mass / molar mass
No. of moles of CaCO3 = 10 / 100.1
= 0.1 mol (corrected to 1 d.p.)
Therefore, the answer is C, 0.1 mol.
