Răspuns :
Răspuns:
Explicație:
A.R atomic CO2=1/2 Ratomic (NH4)2CO3=2/8/1/3
B. R masa CO2=12/32=3/8 Rmasa (NH4)2CO3=2*14/8*1/12/3*16=
C. 12g CO2...3g C....8gO = 28/8/12/48=14/4/8/24=7/2/4/12
100g ......x.........y 25g....7g N....2gH....4gC...12gO
100 g x y z t
D.44gCO2.....12gC E 25g(NH4)2CO3.........4gC
176g..........x x...................................96 g C
F n=m/M=472/44=10,72 mol
1mol.......6,023*10(23 ) particule
10,72 moil.........x
G. n=m/M=700g/96g/mol=7,29 mol