Chemistry
Grade-9
Easy
Question
A certain quantity of gas occupies a volume of 84 cm3 at a pressure of 920 mm. What will be the volume of gas when pressure decreased to 620 mm of the gas at constant temperature.
- 128.25 cm3
142.54 cm3
124.64 cm3
134.45 cm3
142.54 cm3
124.64 cm3
134.45 cm3
Hint:
If initial pressure and volume is multiplied it is equal to product of final pressure and volume.
The correct answer is: 124.64 cm3
The correct option is c)124.64 cm3 .
84 cm3 at a pressure of 920 mm. What will be the volume of gas when pressure decreased to 620 mm 
P1 = 920 mm
V1 = 84 cm3
P2 = 620 mm
V2 = ?
920 x 84 = 620 x V2
V2 = 
V2 = 124.6451
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