A substance consisting only of Na, B and H is 60.80% Na and 28.60% B. What is the empirical formula of the substance?
As is standard with these sorts of problems, we assume a
And then we divide thru each mass by the ATOMIC mass of each constituent to give a molar ratio.
How did I know that there were
And now we divide thru by the smallest molar quantity, i.e.
This is sodium borohydride, a very common laboratory reagent.