Answer:
boyles law state that the volume of a fixed mass is directly proportional to the absolute temperature given that the pressure is constant Charles law state that the volume of a fixed mass is inversely proportional to the pressure given that the temperature is constant
Answer: Oxygen
Explanation:

As seen from the balanced equation:
2 moles of hydrogen combine with 1 mole of oxygen or 1 mole of hydrogen combine with 1/2 mole of oxygen.
According to Avogadro's law, equal volumes of gases contain equal number of molecules and hence equal number of moles.
Thus if x moles of both gases are present, x moles of hydrogen will combine with
moles of oxygen and
moles of oxygen will be left used and will be in excess.
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