Copper (cu) is a transition element used in the making of coins. calculate the mass in grams of 0.0420

The mass in grams of 0.0420 moles is calculated as below

mass = moles x molar mass

the molar mass of Cu = 63.5 g/mol

moles = 0.0420 moles

mass = 63.5 g/mol x 0.0420 = 2.667 grams of Cu