Răspuns :
Daca in 18 .......2 atomi de H
10.......x->x=20/18=1.1atomi
18=masa moleculara a apei:2+16
10.......x->x=20/18=1.1atomi
18=masa moleculara a apei:2+16
prima data faci masa apei
M h20=2x1+16
=2+16
=18 gr/mol
=> 18 grame apa...........2 grame hidrogen
10 grame apa..........x grame hidrogen
=>x=(10*2):18
=>1.(1) grame hidrogen
M h20=2x1+16
=2+16
=18 gr/mol
=> 18 grame apa...........2 grame hidrogen
10 grame apa..........x grame hidrogen
=>x=(10*2):18
=>1.(1) grame hidrogen