Question

Calculate the mass of 100 molecules of copper carbonate. [Atomic mass of Cu = 63.5 u]​

Answer 1

Answer:

mass of 100 molecules of copper carbonate = 12350 amu

Explanation:

Molar mass of CuCO3 = 63.5 + 12 + 16 x 3

                                     =  63.5 + 48 + 12

                                     = 123.5amu

1 molecule of CuCO3 = 123.5amu

100 molecules            = ?

? = 123.5 x 100 = 12350amu