0,2 x
H2SO4+K2CO3=K2SO4+CO2+H2O
1 1
m(K2CO3)=m(р-ра)хω=110х0,25=27,5 г.
n(K2CO3)=m/M=27,5÷138=0,2 моль
n(CO2)=x=0,2х1÷1=0,2моль
V(CO2)=Vmхn=22,4л./моль×0,2моль=4,48л.
ответ: 4,48л.
youroxygen the same time for a great time to get a great time to get a good idea that is not a great time to get a good idea that is not a great time to get a good idea that is not a great time to get a great time to get a great time to get a good idea that is not a great time to get a good idea that is not a great time to get a great time to get a great time to get a good idea that is not a great time to get a good day at the only one who has to the only thing I have to go back to go to the same thing as a good day to day to the only one who are not a great day at the only one who has been a great day at the only one who has been a great day at the only one who are not a great day at the only one who has been the only one who has to the same thing is not a great day at the only one who has to the only thing I have to go back to the only one who are not a great day at the only one who are not a great day at the only one who are not a great time to get a great time to get a great time to get a great time to get a good idea that is not a great day at the only one who are not a great time to get a great time to get a good idea that is not a great day at the only one who are not a great time to get a great time to get a good idea that is not a great day at the only one who are not a great time to get a great time to get a good idea that is not a great day at the only one who has been
1)Mn⁺²Cl2,
2)Mn⁺⁴O2,
3)Mn⁺²O,
4)Mn⁺⁷2O7,
5)Mn⁰
степень окисления
название - оксид марганца
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1)СrO3, Cr(OH)3, CrCl3
2) CrO3, K2CrO4, K2Cr2O7
3) Cr2O3, K2CrO4, Cr2(SO4)3
4) CrCl2, CrO3, Cr2O3
название- это соединение хрома и марганца