oblicz mase cząsteczkową , poniższych związków chemicznych:
a) kwas siarkowy (VI)
b) wodorotlenek sod
c) propen
d) kwas azotowy(V)
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H₂SO₄- 2×1u + 32u + 16u × 4 = 98u
NaOH- 23u + 16u + 1u= = 40u
C₃H₆- 3 × 12u + 6 × 1u = 42u
HNO₃- 1u + 14u + 3 × 16u = 63u
a)H₂SO₄=2u+32u+64u=98u
H₂=2*1u=2u
S=32u
O₄=4*16u=64u
b)NaOH=23u+16u+1u=40u
Na-23u
O-16u
H-1u
c)C₃H₆=36u+6u=42u
C₃=3*12u=36u
H₆=6*1u=6u
d)HNO₃=1u+14u+48u=63u
H=1u
N=14u
O₃=3*16u=48u
licze na naj ;d