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LeRo0ok
@LeRo0ok
July 2022
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В 300 гр 15% раствора соли добавили еще 10 гр соли.Какова массовая доля соли в новом растворе?
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dubes
Mв-ва=300*0,15=45 г
wсоли=45+10/300+10=0,178
wсоли=17,8%
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wсоли=45+10/300+10=0,178
wсоли=17,8%