Please help me find the answer , thank you.

5. how can you decrease the pressure of a gas in a container without changing the volume of the gas?

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

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.