Răspuns :
[tex] M_{H2O} [/tex]=18 g/mol
Deci m de substanta in 3 moli=18x3=54
Deci m de substanta in 3 moli=18x3=54
M-masa moleculara
M H2O=2*1+16
M H2O=2+16
M H2O=18g/mol
m=3*18
m=54 g