Part 4 – Single Replacement Reactions. All these single replacement reactions occur when the lone metal switches places with metal that is in the compound. 9. ___K + ___AgCl à
10. ___Ca + ___CuSO4 à
11. ___Al + ___NaCl à

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.