C. Protons, neutrons, electrons
<span>This question is answered using ideal gas model.
At constant temperature you can state that pV is constant. This is the p and V are inversely related. Then if the pressure doubles the volumen will be half. In this case:
(pV)1 = (pV)2 => V1 = (pV)2 / V2 = 50kPa*5.0L / 125kPa = 2.
Then the answer is the option c. 2.0 L</span>
Explanation:
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