Question

qual e a massa em gramas existente em 2 mol d soda caustica(NaOH)?

Answer 1

NaOH- 23+16+1= 40 g/mol

1mol - 40g
2 mols- x

x=40x2
x=80 g

Answer 2

m = n . MM
m= 2 mol . 40 g/mol
m= 80 g