12 MC In 1989, the oil tanker Exxon Valdez struck a reef in Prince William Sound, Alaska. The accident released 40 million litres of
crude oil. The oil eventually covered 26 000 km2 of water.
(a) Explain why very little of the spilt oil dissolved in the water.
(b) The density of crude oil varies. Assuming a value of 0.86 g/mL,
estimate the average thickness of the oil slick that resulted from
the Exxon Valdez disaster.
(c) How do you think most of the oil from a tanker accident is
dispersed over time? Why would this have been a slow process
in Prince William Sound?

we need the questions , i may then you.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.