To calculate the air pressure, the volume occupied by the air is assumed constant. why is this assumption incorrect?

Explanation:

According to ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant

Pressure is inversely proportional to the volume of the gas. Hence, This assumption is incorrect because the amount being added to flask affect both the pressure and the volume occupied by the air.

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

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