Объяснение:
M(r) N₂ = 14*2=28
M(r) SO₂ = 32+16*2=64
M(r) CuO = 64+16=80
M(r) NaCl = 23 + 35,5 = 58,5.
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Объяснение:
M(r) N₂ = 14*2=28
M(r) SO₂ = 32+16*2=64
M(r) CuO = 64+16=80
M(r) NaCl = 23 + 35,5 = 58,5.