Question 1

The formula of mole is...

Accepted Answer

Mass/ Mr

Answer

Volume x Vm

Answer

Avogadro number/ Amounts of Particle

Answer

Mr/Mass

Question 2

At RTP, amounts of volume of gas is...

Accepted Answer

24 liters

Answer

22.4 liters

Answer

12 liters

Answer

6 liters

Question 3

How many molecules are there in 0.100 mol of C3H8?

Accepted Answer

6.02 x 10^22

Answer

6.02 x 10^21

Answer

6.02 x 10^23

Answer

60.2 x 10^22

Question 4

How many liters are there in 5.00 mol of HNO3 at RTP?

Accepted Answer

120 liters

Answer

4.8 liter

Answer

12 liters

Answer

48 liters

Question 5

How many grams are there in 0.100 mol of CH4 ?(Mr=16 grams/mole)

Accepted Answer

1.6 grams

Answer

160 grams

Answer

0.16 grams

Answer

16 grams

Question 6

What is the concentration (mol/volume) of 2 moles sodium hydroxide in 500 ml of water?

Accepted Answer

4 M

Answer

1 M

Answer

0.4 M

Answer

0.1 M

Question 7

How many liters of 1.4 grams of N2 (Mr = 28 grams/mole) Gas at RTP?

Accepted Answer

1.2 liters

Answer

12 liters

Answer

11.2 liters

Answer

1.12 liters

Question 8

How many grams of 3.01 x 10^21 molecules CaCO3 (Mr=100 gr/mole)?

Accepted Answer

0.5 grams

Answer

500 grams

Answer

50 grams

Answer

5 grams

Question 9

45 grams of glucose (Mr= 180) dissolved in 250 ml water. What is the molarity (mol/volume) of the glucose solution?

Accepted Answer

1 M

Answer

5 M

Answer

0.5 M

Answer

0.1 M

Question 10

How many grams 0.25 dm3 of a 1.00 mol dm–3 Ca(OH)2 solution (Mr Ca(OH)2 = 74 grams/mol)

Accepted Answer

18.5 grams

Answer

7.4 grams

Answer

74 grams

Answer

37 grams

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