Question

quantas moleculas ha em 1360g de h2O2?

Answer 1

Resposta:

$1.5 \times {10}^{22}$

Explicação:

m (H2O2)=1×2+16×2=2+32=34

N=m/M

N=34/1360=1/40=0.025

$1 - 6 \times {10}^{23} \\ 0.025 - x \\ x = 0.025 \times 6 \times {10}^{23} \\ x = 0.15 \times {10}^{23} = 1.5 \times {10}^{22}$