Try warm water& soap if u haven’t already,if that doesn’t work try rubbing alcohol
Partial pressure is the pressure that would be exerted by one of the gases in a mixture if it occupied the same volume on its own. For a mixture of gases, each gas has a partial pressure which is the hypothetical pressure of that gas if it alone occupied the volume of the mixture at the same temperature.
The reaction between Hydrogen and Oxygen under normal conditions is characterized by the following balanced equation:
2 H₂ + O₂ → 2 H₂O
The mole ratio (based on the coefficient used to balance the chemical equation) of H₂ : O₂ is 2 : 1.
Thus there are two times as many moles of H₂ in the reaction as there are moles of O₂.
∴ if the moles of H₂ = 1.75 mol
then the moles of O₂ = 1.75 mol ÷ 2
= 0.875 mol
Now, Mass = Moles × Molar Mass
Thus the mass of oxygen gas = 0.875 mol × 32 g/mol = 28 g
Thus the answer is 28 grams.
answer : the correct option is, (B) 2, 3 and 6.
