In school, jarrett learned that salt lowers the freezing point of water. he wants to test this in a home experiment.

jarrett adds 100 ml of water at 25°c into each of three identical containers. he then adds 0 g of salt to the first container, 25 g of salt to the second, and 50 g of salt to the third container.

which of the following is a constant in his experiment?

the amount of water
the type of container
the amount of salt
the starting temperature of the water

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.