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The number of molecules in one mole of a substance depends on the molecular weig

ID: 1838897 • Letter: T

Question

The number of molecules in one mole of a substance depends on the molecular weight of the substance depends on the atomic weight of the substance depends on the density of the substance depends on the temperature of the substance is the same for all substances A sample of an ideal gas is slowly compressed to one-half its original volume with no change in temperature. What happens to the average speed of the molecules in the sample? It does not change It quadruples It doubles It halves None of the above

Explanation / Answer

(3)the number of molecules in a one mole substance is the same for all substances.

Because of the avagadronumber does not depend on molecuar weight.

Therefore, the correct answer is option (e)  is the same for all substances.

(4)

Temperature of a gas is kwon as the average kinetic energy of the molecules.

Therefore, the correct optionn is(d) it halves