How many of the following gases at STP are less dense than air at STP?
NH₃, He, Kr, and F₂

Name: How many of the following gases at STP are less dense than air at STP? NH 3 , He, Kr, and F 2
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Question

How many of the following gases at STP are less dense than air at STP? NH₃, He, Kr, and F₂

Quizplus · Accepted Answer

At STP (standard temperature and pressure), the density of air is approximately 1.225 kg/m³. Among the given gases, He (helium) and Kr (krypton) are less dense than air, while NH₃, F₂ are more dense than air. Therefore, only 2 gases (He and Kr) are less dense than air at STP.

How Many of the Following Gases at STP Are Less