Witaj :)
- Masa molowa 2 moli tlenu cząsteczkowego
[tex]M_O=16g/mol\\\\M_{2O_2}=2\cdot 2\cdot 16g/mol=\boxed{64g/mol}[/tex]
- Masa molowa 1 mola siarkowodoru
[tex]M_S=32g/mol\\M_H=1g/mol\\\\M_{H_2S}=2\cdot 1g/mol+32g/mol=\boxed{34g/mol}[/tex]
- Masa molowa 1 mola siarczanu(VI) potasu
[tex]M_S=32g/mol\\M_K=39g/mol\\M_O=16g/mol\\\\M_{K_2SO_4}=2\cdot 39g/mol+32g/mol+4\cdot 16g/mol=78g/mol+32g/mol+64g/mol\\M_{K_2SO_4}=\boxed{174g/mol}[/tex]
