Amixture of 0.220 moles co, 0.350 moles h2 and 0.640 moles he has a total pressure of 2.95 atm. what is the partial pressure of h2?

Which of these best describes an ionic bond?

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 do you know when a chemical reaction has occurred