TASK DEFINITION: Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
PROBLEM: Question: The partial pressure of each gas in a mixture is proportional to its what? Answer: mole fraction

SOLUTION: The partial pressure of each gas in a mixture is proportional to its mole fraction. KEY EQUATIONS Mole fraction.

PROBLEM: Question: What kind of reaction is needed to prepare amides? Answer: carboxylic acid reaction

SOLUTION: Amides are prepared by the reaction of a carboxylic acid with ammonia or an amine.

PROBLEM: Question: Coal, oil and natural gas are types of what formed from the remains of once living organisms? Answer: fossil fuels

SOLUTION:
Coal, oil and natural gas are all fossil fuels formed from the remains of once living organisms.