Задание 20
Authored by Алексей Чепига
Chemistry
7th Grade
Used 2+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
49
74
98
113
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
У какого из этих газов молекула самая тяжёлая?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
У какого элемента атомная масса округляется "до половинки"?
Кальций Ca
Бром Br
Хлор Cl
Платина Pt
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
40%
50%
60%
70%
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(Ответ на этот вопрос не требует расчётов!)
В каком веществе массовая доля водорода наименьшая?
HF
HCl
HBr
HI
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
15%
20%
25%
30%
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