Question
An unknown substance kept in a sealed container at STP had a density of 808 kg/m3. When the container was opened and the substance was exposed to room temperature, its density became 1.25 kg/m3. Which change did the substance most likely undergo?
A.
solid to liquid
B.
liquid to solid
C.
gas to liquid
D.
liquid to gas
A.
solid to liquid
B.
liquid to solid
C.
gas to liquid
D.
liquid to gas
Answers
GPT-4o mini
The substance had a density of 808 kg/m³ when sealed in a container at standard temperature and pressure (STP). After being exposed to room temperature, its density changed to 1.25 kg/m³.
The significant decrease in density indicates that the substance transitioned to a less dense state, typical of gases. Specifically, the initial density of 808 kg/m³ suggests that the substance is likely a liquid or something denser than gas, but on exposure to room temperature, it becomes much less dense at 1.25 kg/m³, which aligns with that of a gas.
Based on this information, the most likely change the substance underwent is:
**D. liquid to gas**
The significant decrease in density indicates that the substance transitioned to a less dense state, typical of gases. Specifically, the initial density of 808 kg/m³ suggests that the substance is likely a liquid or something denser than gas, but on exposure to room temperature, it becomes much less dense at 1.25 kg/m³, which aligns with that of a gas.
Based on this information, the most likely change the substance underwent is:
**D. liquid to gas**