# Ascorbic Acid is composed of 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen. If its molecular mass is 176.1 g/mole what is its molecular formula?

The molecular formula is ##”C”_6″H”_8″O”_6″##.

We need to determine the empirical formula and the empirical formula mass. Then divide the molecular mass by the empirical mass, then multiply the empirical formula times the result.

EMPIRICAL FORMULA

Determine the masses
The percentages given add up to ##”100.00%”##. In a ##”100 g”## sample, the masses would be the percentages in grams.

##”C”=”40.92 g”##
##”H”=”4.58 g”##
##”O”=”54.50 g”##

Determine the molar masses of the (atomic weight in g/mol).

##”C”=”12.0107 g/mol”##
##”H”=”1.00794 g/mol”##
##”O”=”15.999 g/mol”##

Determine the number of moles of each element from the given mass and the molar mass.

##”C”:####40.92 cancel”g C”xx(1 “mol C”)/(12.010 cancel”g C”)=”3.407 mol C”##

##”H”:## ##4.58 cancel”g H”xx(1 “mol H”)/(1.00794 cancel”g H”)=”4.54 mol H”##

##”O”:## ##54.50 cancel”g O”xx(1 “mol O”)/(15.999 cancel”g O”)=”3.406 mol O”##

Determine by dividing the moles for each element by the smallest number of moles.

##”C”:## ##(3.407 “mol”)/(3.406 “mol”)=1.000##

##”H”:## ##(4.54 “mol”)/(3.406 “mol”)=1.33##

##”H”:## ##(3.406 “mol”)/(3.406 “mol”)=1.000##

Multiply the ratios times ##3## to get all whole numbers.

##”C”:## ##1.000xx3=3.000##
##”H”:## ##1.33xx3=3.99##
##”O”:## ##1.000xx=3.000##

The empirical formula is ##”C”_3″H”_4″O”_3##.
The empirical formula mass = ##(3xx12.0107″g/mol”)+(4xx1.00794″g/mol”)+(3xx15.999″g/mol”)=88.061″g/mol”##

MOLECULAR FORMULA

Divide molecular mass by empirical mass. Multiply the empirical formula times the result.

##”Molecular mass”https://studydaddy.com/”empirical mass” = “176.1 g/mol”https://studydaddy.com/”88.061 g/mol”=2.000##

Molecular formula ##=## ##”C”_3″H”_4″O”_3″## times 2 ##=####”C”_6″H”_8″O”_6##

## 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:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
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.

### 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.

### 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.