Measuring the amount of deuterium in the universe allows us to set a limit on
A)the temperature of the universe at the end of the era of nuclei.
B)the total amount of mass in the universe.
C)the density of ordinary (baryonic)matter in the universe.
D)the expansion rate of the universe.
E)the current age of the universe.

Question

Quizplus · Accepted Answer

The amount of deuterium in the universe is directly related to the density of ordinary (baryonic) matter. By measuring the amount of deuterium, we can determine how much baryonic matter is in the universe and set a limit on its density. Therefore, choice C is the best answer.

Measuring the Amount of Deuterium in the Universe Allows Us