Question

199.8831mol
(b) what number in addition to the answer to part (a) is needed to determine the number of atoms of ca in the sample?
note: cabr₂ 1 mol cabr₂ = 2 mol br 1 mol cabr₂ = 1 mol ca

Explanation:

Step1: Recall atom - mole relationship

To find number of atoms from moles, Avogadro's number is needed.

Answer:

Avogadro's number ($6.022\times 10^{23}$ atoms/mol)