# Moles, Density and Concentration

This quiz contains multiple-choice problems on concepts like mole, density, specific gravity, flow rate and mass fraction.

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How many atoms of carbon represent 1.5 mole?

6.022 X 10^23

1.2044 X 10^23

3.011 X 10^23

9.033 X 10^23

Which of the following is not a unit of density?

kg/m^3

N/m^3

N.s^2/m^4

g/cm^3

A liquid of mass 10 kg is enclosed in a cylinder of radius 1 m and length 5 m. What is the density of the liquid?

0.54 kg/m^3

0.44 kg/m^3

0.63 kg/m^3

0.83 kg/m^3

What is the density of a liquid of mass of 10 kg and contained in a cylinder of radius 5 m and surface area (excluding top and bottom) of 10π m^2?

0.2π kg/m^3

0.4π kg/m^3

0.5π kg/m^3

0.6π kg/m^3

A solid of density d is dropped into a liquid of density D. If d > D, then

The solid would sink completely

The solid would float

The solid would sink partially

None of the above

How many hydrogen moles are present in 158 g of ammonium bicarbonate?

5

10

15

20

What is the density of a substance of mass 10 g and volume of 5 litres?

2 kg/m^3

20 kg/m^3

200 kg/m^3

2000 kg/m^3

How many g of NaCl represents 1 mole?

23

35.5

58.5

69.5

Calculate the number of moles in 42 g of NaHCO{3}.

0.5

1

1.5

2

Calculate the number of moles in 369 g of CaOCl{2}.

1

2

3

4

What is the number of moles of nitrogen in 274 g of (NH{4}){2}Ce(NO{3}){6}?

16

8

6

4

How many hydrogen moles are present in NH{4}[Cr(SCN){4}(NH{3}){2}] if the weight of nitrogen in it is 49 g?

3.5

5

7

10

Which of the following has the same number of moles as in 398 g of CuSO{4}?

2 g of hydrogen

40 g of oxygen

35 g of nitrogen

58.5 g of sodium chloride

What is the number of atoms of chlorine in 250.5 g of Cl{2}O{6}?

1.806 X 10^24

2.408 X 10^24

9.033 X 10^23

6.022 X 10^23

How many water molecules are present in CuSO{4}•5H2O if the weight of oxygen in it is 36 g?

3.25 X 10^23

5.25 X 10^23

7.52 X 10^23

9.52 X 10^23

Quiz/Test Summary
Title: Moles, Density and Concentration
Questions: 15
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