The number of molecules of nitrogen will be the same as the number of molecules of hydrogen. The correct option is C.
What is Avogadro's law?
The law states that different gases of the same volume stored at the same temperature and pressure will contain the same number of molecules.
Going by Avogadro's law, 500 ml of nitrogen and 500 ml of hydrogen kept together in one vessel at the same constant temperature and pressure will have the same number of molecules.
More on Avogadro's law can be found here: https://brainly.com/question/4133756
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