July 2022 1 12 Report
ОБъЯСНИТЕ КАК ЭТО РЕШАТЬ ?
В каком наборе указаны только соли:
а) Ca3N2, Cu2S, CaH2; б) KF, Cr2S3, PbI2;
в) Mg3P2, NaCl, Al2S3; г) CaC2, Ag2S, AlN ;
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