Question

5..A cylinder of 20 litres capacity contains a gas at 100
atmospheric pressure. How many flasks of 200 cm3
capacity can be filled from it at 1 atmosphere pressure
temperature remaining constant ? [Ans. 10,000 flasks
..A steel cylinder of internal volume 20 litres is filled with
hydrogen at 29 atmospheric pressure. If hydrogen is used
to fill a balloon at 1.25 atmospheric pressure at the same
temperature, what volume will the gas occupy ?
S6looo
[Ans. 464 litres]
7 ..561 dm3 of a gas at S.T.P. is filled in a 148 dm.
container. If temperature is constant, calculate the
percentage change in pressure required.
[Ans. 25% decrease]
8.88 cm of nitrogen is at a pressure of 770 mm
mercury. If the pressure is raised to 880 mm Hg, find
by how much the volume will diminish, temperature
remains constant.
[Ans. 11 cm3]​

Answer 1

Explanation:

5)10,000

6)464 litres

7)25%decrease

8)11cm 3

Answer 2

Question:

A cylinder of 20 litres capacity contains a gas at 100 atmospheric pressure. How many flasks of 200 cm³ capacity can be filled from it at 1 atmosphere pressure, temperature remaining constant?

Answer:

Given:

V1=20L=20000cm³

P1=100atm

V2=?

P2=1

According to Boyles' Law,

P1V1=P2V2

Solution:

100 × 20000 = 1 × V2

2000000 = V2

Also asked that,

how many flasks of 200 cm³ capacity can be filled from it at 1 atmospheric pressure and temperature remain constant.

Therefore,

According to Question:

2000000cm³ ÷ 200cm³

=10000 flasks Ans

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