What is the kinetic energy, in J, of an Ar atom moving at a speed of 650 m/s

In which situation can a mixture always be called a solution

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

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.