How many moles of oxygen atoms are present in 0.350 moles of NaNO2

Define dew point. i am writing this part to be able to ask the question

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.

How many moles of bromine are needed to produce 3.23 moles of potassium bromide