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При растворении 476 г кристаллогидрата CoCl2 . 6 H2O образовался раствор с массовой долей соли 13,56%. Определите массу воды, в которой был растворён кристаллогидрат.
Ответы 1
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1)m=465*0.1356=63.1гр це чиста маса солі
2) 465-63.1=401.9гр маса води
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Автор:
juliánd0ys - 6 лет назад
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1 )Do all people have similar ideas about good and bad behaviour?
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WHAT IS BAD BEHAVIOUR?
People have very different ideas about good and bad behaviour. What is acceptable
in one family can be quite the opposite in another. If you feel you have a problem with
your child’s behaviour, think carefully about whether it might really be your problem.
It is never naughty or dirty for small children to wet or soil themselves. It takes
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