Water has a specific heat capacity of 4.2 J g^–1 K^–1 at room temperature, a latent heat of vaporization equal to 2257 J g^–1, and a boiling point of 100 °C. What are the specific heat capacity, latent heat of vaporization and boiling point of methane?

[Source: © International Baccalaureate Organization 2019]

Outline how the carbon dioxide could be removed from the water used to irrigate the plant.

Outline how hydrogen bonds form in water.

Explain, with reference to the thermal properties of water, how this experiment helps demonstrate how humans respond to overheating.

Calculate the change in temperature in each cup after 20 minutes.

Uncovered:

Covered with wet tissue paper:

Outline how the properties of water make it an ideal transport medium in plants.

State two conditions that must be the same for each cup at the start of the experiment.

Water has important solvent properties. Explain these properties using an example to illustrate your answer.

Hydrogen bonds can exist both within and between molecules in living organisms and have an impact on their structure and function. Explain the importance of hydrogen bonding for living organisms.