How would testing such as that done in this lab exercise be valuable in real-world situations?​

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.