In a graph, what effect would adding a catalyst have on D? A. It would decrease.
B. It would increase.
C. It would stay the same.
D. You cannot tell from this graph.

An observation that requires measurement is called quantitative observable or qualitative

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 electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?