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Химия 1-100

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Химия 1-100
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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

Al24

Al2(4)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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