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Quiz
•
Chemistry
•
9th Grade
•
Hard
Marina Komarova
Used 16+ times
FREE Resource
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
молярная масса Н2О2
16 г/моль
18 г/моль
34 г/моль
32 г/моль
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Молярная масса Fe(NO3)3
242
238 г/моль
242
242 г/моль
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Молярная масса FeSO4*7H2O
278 г/моль
19152 г/моль
280 г/моль
19512 г/моль
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
масовая доля азота в нитрате аммония NH4NO3
35%
17,5%
17%
14%
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
массовая доля кислорода в CuSO4*5H2O
57%
57,6%
58%
6,4%
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
w(K)=26,5%, w(Cr)=35,4%, w(O)= 38,1% выведите формулу соединения
KCrO2
K2CrO4
KCrO3
K2Cr2O7
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Сумма коэффициентов в уравнении Ca3(PO4)2 + HNO3 ->... равна
11
12
10
14
8.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
сумма коэффициентов правой части уравнения Fe3O4+Al->Fe+Al2O3 равна
11
24
22
13
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
NH4NO2 называется
нитрат аммония
энашчетыреэнотри
нитрит азотоводорода
нитрит аммония
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