Question # 1

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

Empirical formula of hydrogen peroxide.

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HO

CO

CHO

CH

Whof the following represent sand?

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NaCl

CaCO3

H2O

CH2O

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

Molecular mass of Acetic Acid

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70 amu

43 amu

60 amu

80 amu

How many atoms are present in one gram of H2O?

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1002 x 10²³ atom

6.022 x 10²³atom

0.334 x 10²³atom

2.004 x 10²³atom

What mass of 95% CaCO3 will be requred to neutralize 50 cm 3 of 0.5 M HCl solution.

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9.5 g

1.45 g

1.32 g

1.25 g

How many moels of molecules are there in 16 g oxygen.

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0.05

0.1

0.5

1

Numbr of hydrogen atoms present in 18 g of water.

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2 x NA

N_A

3 x N_A

1/2 N_A

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

Formula of Ozone.

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O₂

S₈

CO₂

O₃

Formula of common salt is

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NaCl

AgCl

LiCl

KCl

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