Question

In ce cantitati de amoniac si metan se gaseste aceeasi cantitate de hidrogen ca si in 7 moli de apa?

Answer 1

7 moli H2O => Mh2o=2+16=18 g/mol
niu=m/M =>m=7 ori 18=126 g
18 g/mol...........2g H2
126...................xg H2
=>x=2 ori 126/ 18=14g H2
NH3-->amoniac => M amoniac=14+3=17g/mol
CH4-->metan => M metan=12+4=16g/mol

17 g/mol...........3g H2
a......................14g H2
=>a=17ori14/3=79,33 g amoniac

16 g/mol.........4g H2
b.....................14g H2
=> b=14ori14/4=56 g metan