What is the empirical formula of methane given methane can be decomposed into 4.5 g of carbon and 1.5 g of hydrogen?


Your goal when trying to figure out a compound’s empirical formula is to find the smallest whole number ratio that exists between its constituent .

The problem tells you that a sample of methane underwent combustion and produced

  • ##”4.5 g carbon, C”##
  • ##”1.5 g hydrogen, H”##

The first thing to do here is to convert these masses to moles by using the molar masses of the two elements. You will have

##”For C: ” 4.5 color(red)(cancel(color(black)(“g”))) * “1 mole C”/(12.011 color(red)(cancel(color(black)(“g”)))) = “0.3747 moles C”##

##”For H: ” 1.5 color(red)(cancel(color(black)(“g”))) * “1 mole H”/(1.008color(red)(cancel(color(black)(“g”)))) = “1.4881 moles H”##

Now, in order to find the mole ratio that existed between these two elements in the sample that underwent combustion, you must divide both values by the smallest one.

You will have

##”For C: ” (0.3747 color(red)(cancel(color(black)(“moles”))))/(0.3747color(red)(cancel(color(black)(“moles”)))) = 1##

##”For H: ” (1.4881 color(red)(cancel(color(black)(“moles”))))/(0.3747color(red)(cancel(color(black)(“moles”)))) = 3.97 ~~ 4##

Since ##1:4## is already the smallest whole number ratio that can exist between these two elements, you can say that the empirical formula for methane is

##color(green)(bar(ul(|color(white)(a/a)color(black)(“C”_1″H”_4 implies “CH”_4)color(white)(a/a)|)))##

Show more

Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10