M(H2SO4) =1*2+32+16*4 = 98 g/mol
M(Na3PO4) = 23*3+32+16*4 = 165 g/mol
M(CaCL2) = 50+35.5*2 = 111 g/mol
M(Al2O3) = 27*2+16*3 = 102 g/mol
M(KNO3) = 39+14+16*3 = 101 g/mol
Объяснение:
