Given the reaction for the production of ammonia: N2(g) + 3H2(g) -->2NH3(g)

If ammonia is produced at a certain time, t, at a rate of 0.367 M/sec, what is the rate for the disappearance of H2?

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

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.

Based on its chemical properties, identify the position of each chemical family on the periodic table.