CH3-CH=CH-CH3 + H2 --> CH3-CH2-CH2-CH3
(C4H8 + H2 --> C4H10)
MgCl2·12 H2O MgCl2·8H2O MgCl2·6H2O MgCl2·4H2O MgCl2·2H2O MgCl2·H2OMgO + 2HCl.
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My mother's name is (имя). She is forty years old. Mum has got long dark hair and green eyes. She
isn't tall, but she is very nice.
My dad's name is (имя). He is forty seven years old. He has got short dark hair and gray eyes. He is tall.
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Решаем по формуле
1)n=m/M и 2)n=V/Vm
приравниваем две формулы m/M=V/Vm
выражаем V=m*Vm/M
M(CoCl2)=99г/моль
V(CoCl2)=297*22.4/99=67.2 литра