Odpowiedź :
Zad.1
m2H2O = 4u + 32u = 36u
m2H2 = 4u
36u - 4u
36g - x
x = 4 * 36g /:36
x = 4g
Zad.2
mMgO = 24u + 16u = 40u
mMg(NO₃)₂ = 24u + 2 * 14u + 6 * 16u = 148u
40u - 148u
x - 29,6g
x = 40 * 29,6g /:148
x = 8g
Zad.1
m2H2O = 4u + 32u = 36u
m2H2 = 4u
36u - 4u
36g - x
x = 4 * 36g /:36
x = 4g
Zad.2
mMgO = 24u + 16u = 40u
mMg(NO₃)₂ = 24u + 2 * 14u + 6 * 16u = 148u
40u - 148u
x - 29,6g
x = 40 * 29,6g /:148
x = 8g