객관식
Which of the following is the best example of a heat conductor?
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1. Intro to General Chemistry
Chemical Properties
Multiple Choice
Why is helium used in blimps instead of hydrogen?
A
Helium is more abundant in Earth's atmosphere than hydrogen.
B
Helium reacts with air to form a stable compound.
C
Helium is non-flammable, making it safer than hydrogen.
D
Helium is heavier than hydrogen, providing more lift.
검증된 단계별 안내1
Understand the key property required for a gas used in blimps: it must be lighter than air to provide lift.
Recognize that hydrogen and helium are both lighter than air, so both can provide lift for blimps.
Consider the safety aspect: hydrogen is highly flammable and can easily ignite, posing a significant risk.
Helium, on the other hand, is a noble gas and is chemically inert, meaning it does not react or catch fire.
Therefore, helium is preferred over hydrogen in blimps because its non-flammable nature makes it much safer to use.
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