Ответ:
Объяснение:
1)
М(H2SiO3) = Ar(H) * 2 + Ar(Si) + Ar(О) *3 = 1 * 2 + 28 + 16 * 3 = 78
w(H) = Ar(H) * n /М(H2SiO3) * 100% = 1 * 2/78 * 100% = 2,56%
w(Si) = Ar(Si) * n /М(H2SiO3) * 100% = 28/78 * 100% = 35,9%
w(O) = Ar(O) * n /М(H2SiO3) * 100% = 16 * 3/78 * 100% = 61,54%
2)
М(Mg(NO3)2) = Ar(Mg) + Ar(N) * 2 + Ar(О) *6 = 24 + 14 * 2 + 16 * 6 = 148
w(Mg) = Ar(Mg) * n /М(Mg(NO3)2) * 100% = 24/148 * 100% = 16,22%
w(N) = Ar(N) * n /М(Mg(NO3)2) * 100% = 14 * 2/148 * 100% = 18,92%
w(O) = Ar(O) * n /М(Mg(NO3)2) * 100% = 16 * 6/148 * 100% =64,86%
3)
М(K3PO4) = Ar(К) * 3 + Ar(Р) + Ar(О) * 4 = 39 * 3 + 31 + 16 * 4 = 212
w(К) = Ar(К) * n /М(K3PO4) * 100% = 39 * 3/212 * 100% = 55,19%
w(Р) = Ar(Р) * n /М(K3PO4) * 100% = 31/212 * 100% = 14,62%
w(O) = Ar(O) * n /М(K3PO4) * 100% = 16 * 4/212 * 100% = 30,19%
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Answers & Comments
Ответ:
Объяснение:
1)
М(H2SiO3) = Ar(H) * 2 + Ar(Si) + Ar(О) *3 = 1 * 2 + 28 + 16 * 3 = 78
w(H) = Ar(H) * n /М(H2SiO3) * 100% = 1 * 2/78 * 100% = 2,56%
w(Si) = Ar(Si) * n /М(H2SiO3) * 100% = 28/78 * 100% = 35,9%
w(O) = Ar(O) * n /М(H2SiO3) * 100% = 16 * 3/78 * 100% = 61,54%
2)
М(Mg(NO3)2) = Ar(Mg) + Ar(N) * 2 + Ar(О) *6 = 24 + 14 * 2 + 16 * 6 = 148
w(Mg) = Ar(Mg) * n /М(Mg(NO3)2) * 100% = 24/148 * 100% = 16,22%
w(N) = Ar(N) * n /М(Mg(NO3)2) * 100% = 14 * 2/148 * 100% = 18,92%
w(O) = Ar(O) * n /М(Mg(NO3)2) * 100% = 16 * 6/148 * 100% =64,86%
3)
М(K3PO4) = Ar(К) * 3 + Ar(Р) + Ar(О) * 4 = 39 * 3 + 31 + 16 * 4 = 212
w(К) = Ar(К) * n /М(K3PO4) * 100% = 39 * 3/212 * 100% = 55,19%
w(Р) = Ar(Р) * n /М(K3PO4) * 100% = 31/212 * 100% = 14,62%
w(O) = Ar(O) * n /М(K3PO4) * 100% = 16 * 4/212 * 100% = 30,19%