
Вариант на русском
Authored by Амир Иргимбаев
Chemistry
10th Grade
Used 1+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Возрастание атомных радиусов наблюдается в ряду
Li, Be, B
As,P,N
Si, P, S
Al,Mg,Na
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
При окислении меди концентрированной серной кислотой образуется
SO2
SO3
H2
O2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Степень окисление марганеца в соединениях MnO2, KMnO4
+4 и +7
+3 и +6
+7 и +4
+6 и +7
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Масса осадка образованного при сливании 400 г 70%-ного раствора нитрата бария и 200 мл 0.25М раствора серной кислоты
34.94
11.65
17.45
23.33
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Изобарами являются
40
К
19
39
К
19
40
Ar
18
41
Ar
18
40
Ca
20
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Среда будет щелочной в растворе соли
FeCl3
K2SiO3
Na2SO4
CuSO4
Na2S
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Количество вещества( моль ) образовавшихся соли и объем газа , полученные при взаимодействии 48 г сульфида меди(II) и 36.5 г 40%-ного раствора соляной кислоты
0.2 моль
11.2 л
4.48 л
0.5 моль
8.96 л
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