Question

Qual a massa de 2.5 mols de H2SO4 H=1 S=32 O=16

Answer 1

n=m/M ↔ m=n*M

n(H2SO4)=2,5mol

M(H2SO4)=32+16+1=49g/mol

m(H2SO4)=n*M=2,5*49= 122,5g

Answer 2

1 mol--------98g
2,5 mol------x

x= 98.2,5
x= 245g/mol