Question

A team of researchers developed a new chemical for use as antifreeze in car engines. The engineers believe that when the chemical is added to water, the water will freeze at a lower temperature. Which step must the researchers take before they can consider the product successful?

A) They must measure the freezing point of the chemical.
B) They must study the chemical in several kinds of car engines.
C) They must measure the freezing point of water with the chemical added to it.
D) They must vary the concentration of the chemical to produce different mixtures.

Answer 1

C)They must measure the freezing point of water with the chemical added to it.

Answer 2

Option C, They must measure the freezing point of water with the chemical added to it.

Step-by-step explanation:

An Antifreeze is a chemical which is used for lowering the freezing point of water.

In order to check the rightness of an antifreeze , it is advisable to measure the freezing temperature of the mixture of water and the antifreeze chemical.

Once the freezing point of mixture is measured, an engineer could compare the freezing point of water with and without the antifreeze chemical.

Thus, option C is correct