A flask contains hydrogen and oxygen in the ratio of 2:1 by mass at temperature 27∘C. The ratio of average kinetic energy per molecule of hydrogen and oxygen respectively is :

Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, the average molecular kinetic energy of oxygen, compared to hydrogen

Suppose a 500.mL flask is filled with 1.2mol of H2 and 2.0mol of HI. The following reaction becomes possible:+H2gI2g 2HIgThe equilibrium constant K for this reaction is 2.01 at the temperature of the flask.Calculate the equilibrium molarity of H2. Round your answer to two decimal places.

Water can be decomposed by electrolysis to hydrogen gas and oxygen gas. If 2.33 g of water is decomposed to H2(g) and O2(g) and the gases are collected in a 1.00 L flask over water at 25°C (vapor pressure H2O(l) = 23.8 mm Hg), what is the pressure in the flask?

Methane and oxygen react to form water and carbon dioxide, like this:CH4(g)+2O2(g)→2H2O(g)+CO2(g)Use this chemical equation to answer the questions in the table below.Suppose 165.mmol of CH4 and 330.mmol of O2 are added to an empty flask. How much CH4 will be in the flask at equilibrium? None.Some, but less than 165.mmol.165.mmol.More than 165.mmol.Suppose 70.0mmol of H2O and 35.0mmol of CO2 are added to an empty flask. How much CH4 will be in the flask at equilibrium?

In a compound such as water, the ratio of the mass of hydrogen to the mass of oxygen is always ______ in ratio.1 pointa) 1 : 8b) 3 : 16c) 1 : 2d) none of these