Question

1. make each of the following conversions: a. 0.638 mole ba(cn)₂ to grams answer: 121 g ba(cn)₂

Explanation:

Step1: Find molar mass of Ba(CN)₂

Molar mass of Ba = 137.33 g/mol, C = 12.01 g/mol, N = 14.01 g/mol. Molar mass of Ba(CN)₂ = 137.33+(2×(12.01 + 14.01)) = 189.35 g/mol

Step2: Calculate mass

Mass = moles×molar mass = 0.638×189.35 $\approx$ 121 g

Answer:

121 g