Which of the following chemical formulas CANNOT be simplified into an empirical formula? a) C4H16O5
b) N8H4F4
c) Ca2Br4
d) Mg5I10

The answer is a)

Explanation:

The other chemical formulas' subscripts share a common factor, so they can be simplified to an empirical formula, however, the subscripts in   cannot be simplified any further, because they do not share any more whole-number factors with each other.

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

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.