Mr(Li2CO3) = 7*2+12+16*3 = 74
Mr(KNO3) = 39+14+16*3 = 101
Mr(H3PO4) = 1*3+31+16*4 = 98
Mr(Na3PO4) = 23*3+31+16*4 = 164
Mr(Al2(SO4)3) = 27*2+32*3+16*12 = 342
Mr(CaO) = 40+16 = 56
Mr(K2CO3) = 39*2+12+16*3 = 138
Mr(Fe2(SiO3)3) = 56*2+28*3+16*9 = 340
Mr(Cr(OH)3) = 52+16*3+1*3 = 103
Mr(HClO4) = 1+35.5+16*4 = 100.5
Объяснение:
Mr - молекулярная масса
Mr(Li2CO3) = 7*2+12+16*3 = 74
Mr(KNO3) = 39+14+16*3 = 101
Mr(H3PO4) = 1*3+31+16*4 = 98
Mr(Na3PO4) = 23*3+31+16*4 = 164
Mr(Al2(SO4)3) = 27*2+32*3+16*12 = 342
Mr(CaO) = 40+16 = 56
Mr(K2CO3) = 39*2+12+16*3 = 138
Mr(Fe2(SiO3)3) = 56*2+28*3+16*9 = 340
Mr(Cr(OH)3) = 52+16*3+1*3 = 103
Mr(HClO4) = 1+35.5+16*4 = 100.5
Объяснение:
Mr - молекулярная масса