Question

The pressure of a gas having volume 100 lits. originally occupying 75 dm3. at 700mm. find the pressure

Answer 1

$p1 = 700mm \\ v1 = 100ltr \\ p2 = .. \\ v2 = 75ltr$
then,
p1v1=p2v2
700*100=p2*75
p2=700*75/100
p2=525mm

Answer 2

Answer:

p2 = 525

Explanation:

v1= 100liters

v2= 75 dm3

p1 = 700mm

p2= ??

p1/v1= p2/v2

700/100=p2/75

p2 = p1*v2/v1

= 700*75/100 zero will be cancle out and 7 will get multiplied by 75

p2 = 525