Halogens on directly opposite carbons in a benzene ring are in the
para-position
meta-position
ortho-position
none of the above

Calcium chloride +gold(1) oxide—>

The rules of engagement (roe) working group is often used to (select all that apply.)

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.