Question

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Two substances have the same temperature. The particles of Substance A1 point
have a slower average speed than the particles in Substance B. What can
you say about the molar masses of the two substances?
O Their molar masses are the same.
The molar mass of Substance A is greater than Substance B
B the molar mass of substance is greater than substance b
C The molar mass of substance B is greater than substance a
D there is not enough information

Answer 1

Answer:

C The molar mass of substance B is greater than substance A

Explanation:

From the description given, the molar mass of substance B is definitely greater than that of substance A.

 Temperature increases the kinetic energy of a body. The average molecular speed increases with increasing temperature.

 Since the two bodies given are at the same temperature, the one having a lesser molecular mass will have a higher speed.

Substances with low molecular mass can diffuse or effuse more rapidly than one with higher molecular mass under similar conditions.