What is the mass of 3.022 moles of cobalt?

178.1g

Explanation:

m = n * MM

where

m is mass

n is moles &

MM is molecular mass

The molecular mass of cobalt is 58.933195. With this information and the number of moles given in the question, we can perform the calculation

m = 3.022 * 58.933195

m=178.09611529

m = 178.1g