Найдите правильное уравнение. Валентность железа- 3, валентность кислорода- 2
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Brain storm 8 class
Quiz
•
Chemistry
•
1st - 12th Grade
•
Hard
Aida Jumabekova
Used 10+ times
FREE Resource
17 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
FeO
Fe3O4
Fe2O3
Fe3O2
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Найдите правильное уравнение.
Валентность серы 2, валентность кислорода 2
SO
S2O2
SO4
SO3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Валентность Калия 1, валетность кислорода 2
KO2
KO
K2O
K2O2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите серную кислоту
HNO3
H3PO4
HCl
H2SO4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите азотную кислоту
HNO3
HCL
HNO3
H3PO4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какая кислота содержится в желудке
H2SO4
HNO3
HCL
H3PO4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите реакцию металла с раствором соли
CuSO4 + Zn = Zn SO4 + Cu
Mg + HCL= MgCL2 + H2
Na + H2O= NaOH + H2
Mg + O2 = MgO
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