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snezhanabalaxo
@snezhanabalaxo
August 2021
2
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Задача
Какие массы соли и воды необходимо взять для приготовления 500 г 9 % раствора ? Такой раствор называют физиологическим и используют в медицине
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мамиат
500*0,09=45 г соли
500-45=455 г воды
1 votes
Thanks 1
Hardcornaya
Дано:
m(р-ва)= 500г
w(соли)=9%=0,09
Найти:
m соли-?
Решение:
m(соли)=500г*0,09=
45г
m(воды)= 500г-45г=
455г
1 votes
Thanks 2
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Answers & Comments
500-45=455 г воды
m(р-ва)= 500г
w(соли)=9%=0,09
Найти:
m соли-?
Решение:
m(соли)=500г*0,09= 45г
m(воды)= 500г-45г=455г