Why are the properties of gases recorded under conditions or standard temperature and pressure (STP), while the properties of liquids and solids are not?
Because temperature affects the properties of gases, but not liquids or solids.
Because temperature and pressure affects the properties of liquids and solids,
but not gases.
So that we can compare the properties of gases under equal conditions.
Because temperature and pressure affect the properties of gases, but not liquids
or solids.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Consider this initial-rate data at a certain temperature for the reaction described by

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?