Why is the solar system often referred to as the sun’s family ?

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.

Find the mass, in grams, of 5.00*10^23 molecules of f2

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume