Question

A)P2O3; P2O5; б)HNO2; HNO3; в)Na2CO3; NaHCO3У кого кислород больше

Answer 1

Правильный ответ : б) HNO2 и HNO3
HNO2---100%
O2---x%
x=3200/47=68.08% O2
HNO3---100%
O3---x%
x=4800/63=76.19% O2

Answer 2

а) P2O5 has more oxygen than P2O3, as it contains five oxygen atoms per molecule while P2O3 contains only three.

б) HNO3 has more oxygen than HNO2, as it contains one additional oxygen atom per molecule.

в) Na2CO3 has more oxygen than NaHCO3, as it contains three oxygen atoms per molecule while NaHCO3 contains only two.