Which statements are true of heterogeneous mixtures?

1) they settle out.
2) the proportions of solute to solvent may vary.
3) the solute is evenly distributed throughout.
4) they are composed of two solvents and two solutes.

Why is silver chloride is an ionic compound

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.

When balancing a chemical equation: