Zadanie 1
mC6H12O6=6*12u+12*1u+6*16u=180u
72u---x%
180u---100%
x=40%C
12u---x%
180u---100%
x=6,67%H
100%-(40%+6,67%)=53,33%O
Zadanie 2
1 kg---100%
x kg---15%
x=0,15 kg=150 g
Zadanie 3
500g---100%
80g---x%
x=16%
Zadanie 4
mC12H22O11=12*12u+22*1u+11*16u
Stosunek masowy:
mC:mH:mO=144:22:176=72:11:88