20 mL solution of 0.1 M ferrous sulphate was completely oxidised using a suitable oxidising agent. What is the number of electrons exchanged?
1.204 x 1022
193
1930
1.204 x 1021
Calculate the molar mass of the following:
CH4
Molar mass of CH4 = Mass of carbon +mass of hydrogen.
Mass of carbon =12.01
Mass of hydrogen =1.008
12.01 amu + 4x(1.008 amu) = 16.042 amu