Assuming all volume measurements are made at the same temperature and pressure, what volume of hydrogen gas is needed to react completely with 2.09 L of oxygen gas to produce water vapor? Answer in units of L.

4.18L of hydrogen gas.

Explanation:

2H2(g) + O2(g) > 2H2O(g)

From the balanced reaction equation, 22.4 L of oxygen is required to react with 44.8L of hydrogen to produce water.

Therefore, 2.09L of oxygen will require 2.09 × 44.8/22.4 = 4.18L of hydrogen gas.

Recall that the volume ratio of 2:1 for hydrogen: oxygen is always maintained as typified above.

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.