Chemistry, 25.02.2021 20:50 mihirkantighosh

It’s your first day on the job, working as an analytical chemist for Exxon-Mobil! The lead petroleum engineer comes to you, saying that they had an unexpected layer in their fractional distillation and would like you to investigate the compound. They give you a purified, 100g sample of this unknown hydrocarbon (CxHy) to analyze to determine the chemical makeup. You decide that you should burn (combust!) the mystery compound to determine its chemical formula through quantitative analysis. After using enough oxygen to completely combust the entire sample, you measure the resulting products.

Doing so yields 343.356 g of a colorless, relatively inert gas and 56.22 g of a clear gas which quickly condenses to a liquid at room temperature. You also determine the molar mass of the compound to be 128.17 g/mol.

Please list the steps you would use to solve the problem, and give your boss a molecular formula of the unknown compound.

Some tips:
Review what a combustion reaction is! What are the products?
Identify what the two products are! Can you calculate their molar masses?
Make sure to compare ratios of the elements themselves!
Once you have the empirical formula, how can you find out the molecular formula?

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 09:30, janetexcoelho

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

Answers: 1

continue

Chemistry, 23.06.2019 03:00, BeeShyanne

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions

Answers: 1

continue

Chemistry, 23.06.2019 14:00, Lhuckabee

Which of the following represents the balanced reduction half-reaction from the redox reaction? (2 points) pb + pd(no3)2 yields pb(no3)2 + pd pb yields pd2+ + e- pd2+ + 2e- yields pd pb + e- yields pb 2 pd2+ + 4 e- yields 2 pd

Answers: 1

continue

Chemistry, 24.06.2019 04:40, pramirez6994

Ompound a (c6h6) undergoes catalytic hydrogenation over lindlar catalyst to give a compound b which in turn undergoes ozonolysis followed by workup with aqueous h2o2 to yield succinic acid and two equivalents of formic acid. in the absence of a catalyst poison hydrogenation of a gives hexane. propose a structure for compound a.

Answers: 2

continue

You know the right answer?

It’s your first day on the job, working as an analytical chemist for Exxon-Mobil! The lead petroleum...