July 2022 1 24 Report
Решить цепочки превращений. 40 баллов
sio2 => si => sio2 => na2sio3
p => p2o5 => h3po4 => k3po4
s => h2s => zns => so2
n2 => no => no2 => hno3
(сделайте хоть несколько)
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