I know the answer is yes i just dont know why....
2007-01-21 09:34:56 · 4 answers · asked by treesap7h 2 in Science & Mathematics ➔ Chemistry
You are correct. Suppose two substances have the empirical formula CH. Then one could be C2H2, which is acetylene, HC*triplebond*CH, and another could be C6H6, benzene.
2007-01-21 09:43:34 · answer #1 · answered by steve_geo1 7 · 1⤊ 0⤋
Its just saying that the two have the same emperical formula for the sake of the question. If you did it out you'd find that the emperical formula would be CH. So this means that both C and H, in both of these compounds, have the same number of mols in each.. they both can be rounded by the same factor. Both of the mol numbers for the emperical formula are 7.68. You write it C7.68H7.68, so both can be divided by 7.68 to give 1. The only difference is that these have different molecular weights. If you did them both out, you'd find the one that weighs 52.03 amu is C4H4, because dividing the emperical mass and the molecular mass gives you a whole number ratio of 4. But when you divide it 78.05, you get a whole # ratio of 6, getting C6H6. They can both be reduced down to CH because they both have common numbers, so thats why they have the same emperical formula. The reason molecular formulas exist is because emperical formula is short hand, and unreliable as we saw here; both of these compounds had an emperical formula of CH, and were indistinguishable. So molecular formulas are useful for differentiating. Hope this helps.
2016-05-24 08:19:51 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Yes because you can have two substances of the same thing
2007-01-21 09:45:11 · answer #3 · answered by -Eugenious- 3 · 0⤊ 1⤋
They may have the same atoms, but different structure. Isomers (D and L) are a good example of this.
2007-01-21 09:43:29 · answer #4 · answered by joie_du_cor 3 · 1⤊ 0⤋