Two flasks are connected with stopcock. The first flask has a volume of 5 liters and contains nitrogen gas at a pressure of .75 atm. The second flask has a volume of 8L and contains oxygen gas at pressure of 1.25 atm. When the stopcock between the flasks is opened and the gases are free to mix what will the pressure be in the resulting mixture?

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.