Acompound is decomposed by an electric current giving 19.98 % g o and 2.52 g h what is the % composition of this compound. (find the % by mass of each element)

We have to calculate the percentage composition of the compound.

The answer is: amount (in mass percentage) of oxygen is 88.8 % and amount (in mass percentage) of hydrogen is 11.2 %.

We know atomic mass of oxygen is 16 and atomic mass of hydrogen is 1.

The amount of Oxygen produced= 19.98 g and amount of Hydrogen produced= 2.52 g. So, total amount of the compound is: (19.98  + 2.52) g= 22.50 g.

So, mass percentage of oxygen is (Mass of oxygen produced/ total mass of compound) X 100 = = 88.8 %

Masspercentage of hydrogen is:  (Mass of hydrogen produced/ total mass of compound) X 100 = =  11.2 %.

increased stability in the completion of fluorine's outer shell.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.