Odpowiedź:
Porównaj masy molowe substancji
a) H2O i H2S --->H2O<H2S
MH2O=2*1g/mol + 16g/mol=18g/mol
MH2S= 2*1g/mol +32g/mol= 34g/mol
b) H2 i NH3---> H2<NH3
MH2 = 2*1g/mol=2g/mol
MNH3 =14g/mol +3*1g/mol= 17g/mol
c) HF i HBr--> HF< HBr
MHF = 1g/mol + 19g/mol=20g/mol
MHBr =1g/mol + 80g/mol=81g/mol
d) Cl2 i H2---> Cl2> H2
MCl2=2*35,5g/mol=72g/mol
MH2 = 2*1g/mol= 2g/mol
