How much of a 0.93 M solution is needed to create 0.845 Liters of a [0.71] solution?

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

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.

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?