Question 5 In a chemical reaction between gases, 500cm of oxygen reacts with hydrogen to
form water in a closed container. After the reaction has taken place the container is
left to stand until the temperature and pressure of the gas are the same as they were
before the reaction. There are no unreacted molecules of oxygen or hydrogen
remaining in the container.
a. Write down a balanced chemical equation to represent the reaction
b. Calculate the volume of hydrogen present at the start
c. Calculate the volume of water present after the reaction​

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.