Ответ:
Объяснение:
№6
w(Br) = 16/20 = 4/5 = 0,8 = 80%
№7
Mr(SО2) = Ar(S) + Ar(O) * 2= 32+ 16 * 2 = 64г/моль
w(S) = m(S) : Mr(SO2) * 100% = 32/64 *100% = 50%
w(O)= (m(O2) : Mr(SO2)) * 100% = 32/64* 100% = 50%
Mr(SiH4) = Ar(Si) + Ar(H) * 4= 28 + 1 * 4 = 32г/моль
w(Si) = m(Si) : Mr(SiH4) * 100% = 28/32 *100% = 87,5%
w(H)= (m(H4) : Mr(SiH4)) * 100% = 4/32* 100% = 12,5%
Mr(CrО3) = Ar(Cr) + Ar(O) * 3= 52+ 16 * 3 = 100г/моль
w(Cr) = m(Cr) : Mr(CrO3) * 100% = 52/100 *100% = 52%
w(O)= (m(O2) : Mr(CrO3)) * 100% = 48/100* 100% = 48%
№8
Mr(сполуки) w(С) w(Н) w(О)
CH3COOH 60 г/моль 40% 7% 53%
C3H5(OH)3 92 г/моль 39% 9% 52%
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Verified answer
Ответ:
Объяснение:
№6
w(Br) = 16/20 = 4/5 = 0,8 = 80%
№7
Mr(SО2) = Ar(S) + Ar(O) * 2= 32+ 16 * 2 = 64г/моль
w(S) = m(S) : Mr(SO2) * 100% = 32/64 *100% = 50%
w(O)= (m(O2) : Mr(SO2)) * 100% = 32/64* 100% = 50%
Mr(SiH4) = Ar(Si) + Ar(H) * 4= 28 + 1 * 4 = 32г/моль
w(Si) = m(Si) : Mr(SiH4) * 100% = 28/32 *100% = 87,5%
w(H)= (m(H4) : Mr(SiH4)) * 100% = 4/32* 100% = 12,5%
Mr(CrО3) = Ar(Cr) + Ar(O) * 3= 52+ 16 * 3 = 100г/моль
w(Cr) = m(Cr) : Mr(CrO3) * 100% = 52/100 *100% = 52%
w(O)= (m(O2) : Mr(CrO3)) * 100% = 48/100* 100% = 48%
№8
Mr(сполуки) w(С) w(Н) w(О)
CH3COOH 60 г/моль 40% 7% 53%
C3H5(OH)3 92 г/моль 39% 9% 52%