How many moles of naoh are in 27.8 ml of 0.168 m naoh?

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

What happens to isotopes that are unstable?

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.