Calculate the empirical formula of a compound that is 42.9% Carbon and 57.1% Oxygen.

CO.

Explanation:

Assuming the given percentages are by mass, we can solve this problem via imagining we have 100 g of the compound, if that were the case we would have:

Now we convert those masses into moles, using the elements' respective molar masses:

As the number of C moles and O moles is roughly the same, the empirical formula for the compound is CO.

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it