Question

Помогите пожалуйста)​

Answer 1

Ответ:

Объяснение:

Mr(SiO2) = Ar(Si) + Ar(O) * 2 = 28 + 16 * 2 = 60

w(Si) = Ar(Si) * n/Mr(SiO2) * 100% = 28/60 * 100% = 46,67%

w(O) = Ar(O) * n/Mr(SiO2) * 100% = 16 * 2/60 * 100% = 53,34%

Mr(Al(OH)3) = Ar(Al) + (Ar(O) +Ar(H)) * 3 = 27 + (16 + 1) * 3 = 78

w(Al) = Ar(Al) * n/Mr(Al(OH)3) * 100% = 27/78 * 100% = 34,62%

w(O) = Ar(O) * n/Mr(Al(OH)3) * 100% = 16 * 3/78 * 100% = 61,54%

w(H) = Ar(H) * n/Mr(Al(OH)3) * 100% = 1 * 3/78 * 100% = 3,84%

Mr(Н4Р2О7) = Ar(Н) * 4 + Ar(Р) * 2 +Ar(О) * 7= 1 * 4 + 31 * 2 * 16 * 7 = 178

w(H) = Ar(H) * n/Mr(Н4Р2О7) * 100% = 1 * 4/178 * 100% = 2,25%

w(Р) = Ar(Р) * n/Mr(Н4Р2О7) * 100% = 31 * 2/178 * 100% = 34,83%

w(O) = Ar(O) * n/Mr(Н4Р2О7) * 100% = 16 * 7/178 * 100% = 62,92%