Question

question 9 of 25
thermal windows often have all the air pumped out between the panes and a gas pumped in that is not harmful and wont react with other things. what gas would be used?
a. cl
b. n
c. ar
d. o

Explanation:

To determine the gas used in thermal windows, we analyze the properties of each option:

• Option A (Cl, Chlorine): Chlorine is reactive and harmful, so it's not suitable.
• Option B (N, Nitrogen): While nitrogen is non - reactive to some extent, in thermal windows, argon is more commonly used for its better insulating properties and extreme non - reactivity.
• Option C (Ar, Argon): Argon is an inert gas, non - harmful, and doesn't react easily. It is commonly used in thermal windows to improve insulation by reducing heat transfer.
• Option D (O, Oxygen): Oxygen is reactive and can support oxidation, so it's not suitable.

Answer:

C. Ar