What is the answer to question 7, NH4C2H3O2

What substance has a mass of 9.5g and volume of 2.1cm^3

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.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?