Question

13 what is the mass of .8 mol of cacl₂? (nearest whole number; no units)

Explanation:

Step1: Find molar mass of \(CaCl_2\)

Molar mass of \(Ca\) is \(40.08\) g/mol, \(Cl\) is \(35.45\) g/mol. For \(CaCl_2\), molar mass \(M = 40.08 + 2\times35.45\)
\(M = 40.08 + 70.9 = 110.98\) g/mol

Step2: Calculate mass for 1 mol (wait, the problem says "1 mol"? Wait, maybe typo, but if it's 1 mol, mass is molar mass. Round to whole number.

\(110.98\approx111\)

Answer:

111