Which contain a common ion that will shift the equilibrium system represented by the equation shown? select all that apply. 1) mgso4 2) na2s 3) hno3 4) cacl2

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

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.

In pqr m< p=60 m< q= 30 and m