Ответ:

Объяснение:

M(K3PO4) = Ar(K) * 3 + Ar(P) + Ar(O) * 4 = 39 * 3 + 31 + 16 * 4 = 212

w(K) = Ar(K) * n/M(K3PO4) * 100% = 39 * 3/212 * 100% = 55,19%

w(Р) = Ar(Р) * n/M(K3PO4) * 100% = 31/212 * 100% = 14,62%

w(О) = Ar(О) * n/M(K3PO4) * 100% = 16 * 4/212 * 100% = 30,19%

M(N2O5) = Ar(N) * 2 + Ar(O) * 5 = 14 * 2 + 16 * 5 = 108

w(N) = Ar(N) * n/M(N2O5) * 100% = 14 * 2/108 * 100% = 25,93%

w(О) = Ar(О) * n/M(N2O5) * 100% = 16 * 5/108 * 100% = 74,07%

M(H2SO4) = Ar(Н) * 2 + Ar(S) + Ar(O) * 4 = 1 * 2 + 32 + 16 * 4 = 98

w(Н) = Ar(Н) * n/M(H2SO4) * 100% = 1 * 2/98 * 100% = 2,04%

w(S) = Ar(S) * n/M(H2SO4) * 100% = 32/98 * 100% = 32,65%

w(О) = Ar(О) * n/M(H2SO4) * 100% = 16 * 4/98 * 100% = 65,31%