Răspunsuri

2014-09-21T14:49:27+03:00
Masa molara=84
 in 84 g NaHCO3....23g Na....1gH...12gC....48gO
in 100g NaHCO3.....x..............y..........z...........w

x=27.38
y=1.19
z=14.28
w=57.14