
Химия 1-100
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Others
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KG
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Easy
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100 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Specify value of valence of the atom an carbon:
4;2
4; 3
2;1
6; 4
6;2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Specify a unit of measure of the substances molar weight:
g/mole
kg/mole
g
kg
l/mole
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calculate the relative molar weight of a sulfuric acid
98
98
980
0,98
0,098
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calculate the relative molar weight of the chloride of sodium
58,5
60,1
72,2
53,2
42
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Specify the formula of the iron(III) sulfate
Fe2(SO4)3
FeSO4
FeS2
FeSO3
Fe(SO3)3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Finish the equation of reaction and specify the substance – х
Al(OH)3 + H2S → x + H2O
Al2S3
AlSО4
AlSО3
Al2SО4
Al2(SО4)3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Specify multiacid a hydroxides:
Al(OH)3, Fe(OH)2
Ca(OH)2; KOH
NaOH; HOH
KOH; Fe(OH)
Fe(OH)2; NH4OH
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