What is the volume of 27.3g of Cl2 vapor at STP?*

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

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.

What metric units would you use to measure the thickness of a key