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Квиз: Массы атомов и элементов

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Квиз: Массы атомов и элементов

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Проверка относительной атомной и молекулярной массы.

Created by

Natalia Bleyshmidt
Natalia Bleyshmidt
Russian Federation

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Квиз: Массы атомов и элементов
 

Квиз: Массы атомов и элементовOnline version

Проверка относительной атомной и молекулярной массы.

by Natalia Bleyshmidt
1

Массовая доля водорода в воде составляет примерно 88,9%.

2

Относительная атомная масса элемента определяется как средневзвешенная масса его изотопов и может иметь дробное значение.

3

Массовая доля кислорода в углекислом газе (СО2) больше, чем в угарном газе (СО)

4

Относительная молекулярная масса вещества равна сумме относительных атомных масс всех входящих в формулу атомов.

5

Относительная молекулярная масса NaCl равна 36,5 г/моль.

6

Массовая доля элемента в соединении рассчитывается как (масса всех атомов элемента / масса соединения) × 100%.

7

Относительная атомная масса элемента всегда целое число.

8

Молекула углекислого газа (СО2) легче, чем молекула угарного газа (СО)

 
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