According to the ideal gas law, what happens to the volume of a gas when the pressure doubles (all else held constant)?

According to the ideal gas law, what happens to the volume of a gas when the pressure doubles (all else held constant)?
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The volume is halved(Explanation): this is boyle's law PV=PV. In order to keep this equation true, if one variable (pressure in this case) is doubled, the other variable must be the reciprocal of that (in this case 1/2, which is reciprocal of double).
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