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: change up your response a bit
A forest fire is considered a chemical change because of the changing of the wood by combustion, which is not a physical change.
<span>H2PCH3 + H2O <-----> H3PCH3+ + OH-</span>
2K + Cl₂ ⇒ 2KCl
2Ca + O₂ ⇒ 2CaO
