Вопрос школьника по предмету Химия
Определить объём водорода, который выделится при взаимодействии магния с 800 г уксуса, масова доля кислоты в котором составляет 6%.
Ответ учителя по предмету Химия
2СН3СООН + Мg = (CH3COO)2Mg + H2
Надеюсь правильно ❤️
Удачи
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The first break is at about half past ten, when we can go outside to meet our friends for twenty minutes, and talk or play some kind of game. Then come the next two lessons, and then another break for dinner. At dinnertime the school hall is laid out with tables and chairs, and we queue up at a serving hatch, where we cfn order any of a number of different foods. Next we pay for the food at a separate counter, and then go off to sit down and eat. After dinner we have two more lessons before we go home. When I get home I usully go up to my room and listen to music or read, or take the dog out, and after an hour or so have supper. After that I eiher do my homework if I have any, or go to visit one of my friends and we play or listen to music together.
2x(x-3)-3x(x+5)
Срочно!!!
1=4
2=16
3=64
4= ?