Question #4b3f0

1 Answer
Feb 9, 2017

Answer:

#HO#.........I wonder what it could be......?

Explanation:

As with all these empirical formulae problems, we assume a mass of #100*g#, and then we work out the atomic composition:

#"Moles of hydrogen:"# #(5.88*g)/(1.00794*g*mol^-1)=5.83*mol#

#"Moles of oxygen:"# #(94.12*g)/(15.999*g*mol^-1)=5.88*mol#

This is near enuff to equality with respect to moles. The empirical formula of the compound is thus #OH#. The likely molecule is #"hydrogen peroxide"#, #HO-OH#. How is this consistent with the empirical formula?