2. Укажіть рядок, що містить лише формули кислот:
А) KNO3, HNO3, HNO3, HCI
Б) ZnSO4, H2SO4, H2SO3, HCI
B) HNO3, HNO2, H2SiO3, H2SO4
Г) H2S, HNO2, H2Se, K2S​
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