Question # 1

When one mole of each of the following compounds is reacted with oxygen, which wil produce the maximum amount CO2?

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Carbon

Ethane

Diamond

Methane

Stochiometric calculators are used to prepare.

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Soaps

Shampo

Perfumes

All of these

Value of Avagadro's number is.

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6.6 x 10^-20

6.02 x 10²³

6.00 x 10²⁴

1.32 x 10²³

The mass number of sodium is.

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19

31

27

23

40 g of H₃PO₄ contains numebr of moles

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0.58 g

4.8 g

5.8 g

0.408 g

A nceklaee has 6 g of diamonds in it . What are the numberof carbon atoms in it?

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3.01 x 10²³

1.003 x 10²³

12.04 x 10²³

6.02 x 10²³

Which of the following is insoluble salt

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KCl

AgCl

NaCl

CaCl2

Emperical Formula of Glucose is

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CH2O

CHO

CHO2

C2HO

Whcih term is the same for one mole of oxgen and one mole of water.

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atoms

mass

Molecules

Volume

1- gram atom of carbon contain hwo many moles.

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1 mole

2 mole

6 moles

12 moles

Empirical formula of acetic acid (CH3COOH) is

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CHO

CH

CH2O

None of these

How many number of moles are equivalent to 8 gram of CO2.

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0.18

0.15

0.24

0.21

Mass of 3 moles of oxygen atoms is.

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64 g

16 g

32 g

48 g

Without stoichiometry which industry cannot exist.

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Law of mass action

Law of conservationof mass

Law of definite proportion

Both a and b

Limes is another name of

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Sodium hydroxide

Sodium Carbonate

Calcium Carbonate

Silicon dioxide

How many moles are there in 25 g of H₂SO₄?

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0.765 Moles

0.255 moles

0.4 moles

0.51 moles

Molecular mass of Acetic Acid

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70 amu

43 amu

60 amu

80 amu

Which one of the following compounds will hae the highest percentage of the mass of nitrogen?

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N2H4

CO (NH2)2

NH3

NH2OH

How many atoic mass units (amu) are there in one gram.

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1 amu

6.022 x 10²³

10 amu

6.022 x 10²²

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