Using the formula density = mass / volume, explain what will be the effect of heat on the gas kept in a closed bottle.
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Answer: density will decrease.
Explanation: we know the ideal gas equation that pv=nrt where p is the pressure, v is the volume n is no. of moles r is gas constant and t is temperature from this equation we can conclude:
pv=nrt
therfore volume is directly proportion to temperature
on increasing heat volume increases. (1)
now,
density = mass/volume
density is inversely proportional to volume.
on incresing volume density decrease (2)
from (1) we have increased volume therfore by (2) density decrease
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