Question

Which of the following pairs does not share the same empirical formula?
C2H6 and C4H12
C3H6O3 and C2H4O2
C3H8O and CH2O
C2H8 and CH4

Answer 1

@Australopithecus

Answer 2

An empirical formula is just the reduced molecular formula, think of it kind of like a fraction

4/6 = 2/3

where 4/6 is the molecular formula and 2/3 is the empirical formula because it is reduced completely

Answer 3

oh okay

Answer 4

so its B?

Answer 5

so for instance,

the molecular formula
C4H10

would have an empirical formula of

C2H5

I just divided all elements by the same number 2

Answer 6

yes it is B

Answer 7

Which of these is an indicator that a chemical reaction has occurred?

Select one:
a.

precipitate forms
b.

temperature remains the same
c.

color is diluted
d.

mass increases

Answer 8

which one is or isnt?

Answer 9

which one do you think it is?

Answer 10

can you just quickly answer that?

Answer 11

Thats not what the site is for

Answer 12

You wouldnt learn anything from that

Answer 13

well he can make a guess it is a pretty easy question

Answer 14

Yeah, I learned it first day of my chem class

Answer 15

I would say c

Answer 16

@Australopithecus I got the question wrong, says it wasnt B?

Answer 17

damn I see what was wrong now

Answer 18

How would "temperature remains the same" be an indication of a chemical reaction? A chemical reaction results in a rearrangement of elements

Answer 19

The answer was D, C2H8 and CH4 not B, and @Mindinventor2319 when a chemical reaction occurs something has to happen that wouldnt happen if another chemical was added to change the original chemical didnt change

Answer 20

@Australopithecus I just realized that C was "color is diluted" yes @Mindinventor2319 that would be correct