Question

Sa se determine numarul de moli si De molecule continute intr un amestec format din 4g de hidrogen si 14g de azot!!!!

Answer 1

MH2=2g/mol
MN2=28g/mol

n=m/M=4/2=2 moli H2

n=m/M=14/28=0.5 moli N2

nr moli amestec = 2+0.5=2.5 moli

1 mol amestec......6.022*10^23 molecule
2.5 moli amestec.....x=Calculează!!