How many moles of nitrogen gas are in a 25-liter tank at 350°K under a pressure
of 3.45 atm?

What are the 4 phases of matter in order of increasing engery content?

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

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.