Respuesta :
In one mole of cadmium nitrate there are 2 moles of nitrogen atoms. So the mass of nitrogen in 1 mole of the compound is 2 x 14.01 = 28.02 g
when there is a suffix outside a parenthesis, it multiplies every atom inside the parenthesis. so since in nitrogen is inside the parenthesis with a 2 as a suffix, it means there are 2 nitrogens
2 x 14.01= 28.02 g/mol
2 x 14.01= 28.02 g/mol