Question

calcular a massa de 2,4.10^23 atomos de silicio

Answer 1

Explicação:

6.10^23.................28

2,4.10^23...............x

6.10^23 x = 67,2.10^23

x = 67,2.10^23/ 6.10^23

x= 11,2. 10^ 23 ou 1,12.10^ 24