Both hydrogen sulfide (H2S) and ammonia (NH3)
have strong, unpleasant odors. Which gas has the
higher effusion rate? If you opened a container of
each gas in a corner of a large room, which odor
would you detect first on the other side of the
room? Assume the temperature is constant.
Explain your answer.

The molar mass of H2S is greater than the molar mass of NH3, making the velocity and effusion rate of NH3 particles faster. Effusion rate is inversely proportional to molar mass. NH3 will have a higher average molecule velocity, so it will diffuse faster and will reach the other side of the room more quickly.

Explanation:

The molar mass of H2S is greater than the molar mass of NH3, making the velocity and effusion rate of NH3 particles faster.

Effusion rate is inversely proportional to molar mass.

NH3 will have a higher average molecule velocity, so it will diffuse faster and will reach the other side of the room more quickly.

Explanation:

the answer is definitely c.