6 moli de calciu reacționează cu x moli de acid fosforic . Valoarea lui x este

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:

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?