Gas Law Worksheet I -
Go to the Gas Law WS I.
- a) The gas molecules move faster because they have more
kinetic energy. Because of the faster motion, more
collisions occur causing the pressure to increase.
b) The molecules are moving slower so in order to keep
the pressure constant (same number of collisions) the
volume must decrease to give the molecules less space to
move around in.
c) By adding more molecules, the number of collisions
increases. The container must be cooled to slow down the
molecules so that the number of collisions is reduced to
the original level.
- Volume is directly related to the moles of gas. By
tripling the number of moles of gas, the volume must also
triple in order to keep the pressure the same, i.e. the
same number of collisions. Therefore the volume increases
to 6.0 L.
- The volume must increase in order to keep the collisions
constant. The molecules are moving faster since they are
heated so they need more space to keep the pressure
- The reading will be high since the tires are
warm. This is not offset by the fact that you
decreased in altitude, which would make the
reading low (see next question).
- You need to add air to the tires.
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