Повторение 3ч 7 класс

Quiz
•
Chemistry
•
7th Grade
•
Medium
Marina Komarova
Used 12+ times
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Молекулярная масса углекислого газа СО2
56
28
44
90
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Чему равна масса 5 молекул серной кислоты H2SO4
98
500
324
490
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Рассчитайте молекулярную массу сульфата железа (III)
Fe2(SO4)3
400
1032
512
6384
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Во сколько раз масса молекулы сахарозы С12H22O11 больше массы трех молекул воды?
в 6 раз
в 6,3 раза
в 6,5 раз
в 19 раз
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Чему равна массовая доля кальция в карбонате кальция CaCO3 ?
100%
40%
60%
20%
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Запишите формулу оксида меди (I)
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Запишите с помощью формулы и коэффициента четыре молекулы воды
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