Question

Lars observes a substance to be a solid and to float in water at room temperature (23°C). Based on the given properties, which substance is the most likely identity of this sample?

Substance Melting Point (°C) Boiling Point (°C) Density at Room
Temperature (g/cm3)
carbon tetrachloride -22.9 76.7 1.59
cetyl alcohol 49.3 344 0.811
dichlorobenzene 53.5 174 1.25
sulfur hexafluoride -64 -50.8 0.00617

Answer 1

the answer is C. bc it has the highest numbers in group

Answer 2

The correct answer is sulfur hexafluoride

• Why Sulfur Hexafluoride?
• As it says the substance floats above water at room temperature and lists some substances and their density at room temperature
• we know that the density of water is 1.0 so the substance in order for it to float has to be less than 1.0 and the densities for Sulfur Hexafluoride, are all less than 1.

Learn more about Density here

https://brainly.com/question/1354972

#SPJ2