# General Chemestry

Diacetyl, a substance contributing to characteristic flavor and aroma of butter, consist of 55.8% C, 7.03% H, and 37.17% O. In the gaseous state at 100 C and 747 torr, a 0.30 gram sample occupies a volume of 111ml. What is the molacular formula of diacetyl?

1. 👍 0
2. 👎 0
3. 👁 97
1. Say we had 100 grams of this stuff
Then that would be
55.8 g of C
7.03 g of H
37.17 g of O
divide each by atomic weight to get ratio of atoms in molecule
C --> 55.8/12 = 4.65
H --> 7.03/1 = 7.03
O --> 37.17/16 = 2.32
about three H for every O
about two C for every O
so molecule of form:
C2x H3x Ox
and the molecular mass of a mole will be:
16 x + 3x + 24 x = 43 x grams per mole
NOW
find out how many moles you have from
n = P V
/(RT)
we know it weighs .3 grams per n moles
so find out how many grams per mole
then set that equal to 43 x and solve for x

1. 👍 0
2. 👎 0
posted by Damon

## Similar Questions

1. ### chemistry

Diacetyl, a substance contributing to the characteristic flavor and aroma of butter, consists of 55.8% C, 7.03% H, and 37.17% O. In the gaseous state at 100 degrees celsius and 747 torr, a 0.30 gram sample occupies a volume of 111

asked by Bob on February 23, 2010
2. ### Science

Explain why every substance has a characteristic density, but no substance has a characteristic mass.

asked by Bo on February 3, 2010
3. ### language arts

What is the correct way to punctuate the underlined part of the following sentence?After beating the sugar with the butter he added eggs to the mixture. --------- butter he is underlined. a)butter;he b)butter:he c)butter,he

asked by gwen on May 18, 2014
4. ### Algebra word problem

A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible

asked by Linda on December 6, 2011

A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible

asked by Linda on November 9, 2011
6. ### Algebra word problem

A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible

asked by Linda on November 8, 2011
7. ### math

A baker bought some butter. He used 360 grams to make some pastry. This was 5/6 of the butter he had. How much butter did he buy at first?

asked by Reily on March 29, 2016
8. ### Biology

26. The relationship between population growth and resources can be described as a. inverse; as one goes up the other goes down b. parallel; when one goes up so does the other c. complex; there are many contributing factors d.

asked by mysterychicken on February 21, 2010
9. ### PLS HELP ASAP 1 SUPER HARD & ANNOYING QUESTION

Use the diagram to answer question 13. so substance A looks like a row of three little circles on the top and bottom all organized (total six dots). substance b is all clumped together circles and is disorganized. 13. How can

asked by sonamy4eva on March 12, 2014
10. ### Science

13.)How can substance A and B be compared? Choose all that apply. A.)The particles of substance A have more energy than the particles of substance B.*** B.)The particles of substance A are more tightly held together than the

asked by #FreeGucci on March 16, 2016

More Similar Questions