Question

Determinati numarul de moli de atomi din :

a) 6grame atomi de hidrogen

b)40grame atomi de calciu

c)60 kilograme atomi de oxigen

d)15kilograme atomi de fosfor

Answer 1

a)1mol.................2g
x mol...................6g
x=6*1/2=3 moli Hidrogen

b)1mol................40g
y moli.................40g
y=1 mol Calciu

c)1mol....................32g
z moli.....................60000g
z=60000*1/32=1875 moli

d)1mol....................31g
q moli....................15000g
q=15000*1/31=483.87 moli