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1. What are some occasions that require you to measure the pressure of a gas? Dwhile sea diing, Oxyim tank pressure is measur
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2) Airplane is pressurized because the air at the altitude of which a plane flies is very thin and without it being pressurized it would be hard for humans to breathe and get oxygen.

3) Scuba divers need increased gas pressure because the deeper the diver descends the more pressure that is applied to the body, the increase allows for divers to breathe under these extreme pressures.

4) E = 3 * k * T /2

k is Boltzmann constant, E is kinetic energy of gas and T is temperature. Thus, increase in temperature will increase the kinetic energy of gas.

Decrease in temperature means decrease in kinetic energy.

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