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ICSE Class 9 Answered

A student performed an experiment to measure the pressure and volume of a gas at constant temperaure and noted the following.
 
    Pressure(mm of Hg)             Volume(cm*cm*cm)
 
    100                                                       80
    125                                                        x
    200                                                       40
      y                                                        32
 
Calculate the value of x and y.
Which law was used in the calculations?Draw a  suitable graph.                                                                                                                        
Asked by Nitin | 29 Mar, 2017, 04:26: PM
answered-by-expert Expert Answer

Case I:

P1 = 100 mm of Hg

V1 = 80 cm3

V2 =?

P2 =125 mm of Hg

 

P1V1 = P2V2

V2 = P1V1/P2 = 100x80 = 64cm3

                               125

Case II:

P1 = 200 mm of Hg

V1 = 40 cm3

V2 =32 cm3

P2 =?

 

P1V1 = P2V2

P2 = P1V1/V2 = 200x40 = 250   mm of Hg

                                     32

 

It follows Boyle’s law.

Answered by Vaibhav Chavan | 29 Mar, 2017, 07:38: PM

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