Mr(O3) = 3 * Ar(O) = 3 * 16 = 48
Mr(H2SO4) = 2 * Ar(H) + Ar(S) + 4 * Ar(O) = 2 * 1 + 32 + 4 * 16 = 2 + 32 + 64 = 98
Mr(Ca3(PO4)2) = 3 * Ar(Ca) + 2 * Ar(P) + 8 * Ar(O) = 3 * 40 + 2 * 31 + 8 * 16 = 120 + 62 + 128 = 310
Mr(C6H12O6) = 6 * Ar(C) + 12 * Ar(H) + 6 * Ar(O) = 6 * 12 + 12 * 1 + 6 * 16 = 72 + 12 + 96 = 180
Ответ: Mr(O3) = 48, Mr(H2SO4) = 98, Mr(Ca3(PO4)2) = 310, Mr(C6H12O6) = 180.