The characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. combustion of 2.22 mg of ethyl butyrate produces 5.06 mg of co2 and 2.06 mg of h2o. what is the empirical formula of the compound? (type your answer using the format co2 for co2.)
Solved
Show answers
More tips
- S Sport Running: How to Do It Right?...
- F Food and Cooking How to Cook Spaghetti Right – Secrets and Tips...
- P Philosophy Personal attitude towards Confession: how to prepare and undergo the procedure correctly?...
- H Health and Medicine Flu: How to Recognize It by the First Symptoms?...
- F Food and Cooking How to Sober Up Quickly? Important Facts and Tips...
- H Health and Medicine How to Properly Take a Blood Sugar Test?...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
Answers on questions: Chemistry
- C Chemistry Fill in the missing formula or name...
- C Chemistry When electron move from an excited state to their ground state a continuous spectrum is emitted....
- C Chemistry What is the energy transformation that is taking place from the batteries to the flashlight when it is on? a) heat to magnetic to light b) chemical to magnetic to light...
- C Chemistry Which environmental factor would likely lead to an increase in genetic variation in a population of squirrels? a.an increase in predators b.an increase in available food...
- C Chemistry 26.2 g piece of copper metal is heated from 21.5°C to 201.6°C. Calculate the amount of heat absorbed by the metal. The specific heat of Cu is 0.385 /g C....
- C Chemistry What is the molarity of a solution containing 0.5 mol of zinc sulfate (ZnSO4) per liter?...
- E English What point of view uses the pronouns he, she, and they...
- E English Distinguishing between fact and opinion 9. which of these is an opinion a. crocodiles live in africa. b. crocodiles have a pointed snout. c. crocodiles like to bask in...
- C Computers and Technology Is a storyboard an example of an implemation tool?...
- M Mathematics Once a commercial plane reaches a the desired altitude, the pilot often travels at a crusing speed. on average, the cruising speed is 570 miles/hour. if a plane travels...
Ответ:
C₃H₆O
Explanation:
1) First, calculate the chemical composition, which you do using balance mass using the data given.
2) Data:
i) mass of ethyl butyrate: 2.22 mg
ii) mass of CO₂: 5.06 mg
iii) mass of H₂O: 2.06 mg
3) Solution
i) All the carbon in CO₂ produced was present in the ehtyl butyrate sample.
ii) The molar mass of CO₂ is 44.01 g/mol
iii) Use proportionality:
12.01 g C / 44.01 g CO₂ = x / 5.06 mg C ⇒ x = 1.38 mg C
iv) All the H in H₂O was present in the original sample of ethyl butyrate
v) The molar mass of H₂O is 18.015 g/mol
vi) Use proportionality
2.016 g H / 18.015 g H₂O = x / 2.06 mg H ⇒ x = 0.23 mg H
vii) Mass balance:
mass of O in the sample = mass of the sample - mass of H - mass of C
mass of O = 2.22 mg - 1.38 mg - 0.23 mg = 0.61 mg O.
viii) Composition:
C = 1.38 mg
H = 0.23 mg
O = 0.61 mg
Which in terms of composition is the same that:
C = 1.38 g
H = 0.23 g
O = 0.61 g
ix) Divide each by the molar atomic mass of the corresponding element, to obtain the number of moles:
C = 1.38 g / 12.01 g/mol = 0.115 mol
H = 0.23 g / 1.008 g/mol = 0.228 mol
O = 0.61 g / 16 g/mol = 0.0381 mol
x) Divide each by the least number of moles to obtain mole proportion
C = 0.115 / 0.0381 = 3.02 ≈ 3
H = 0.228 / 0.0381 = 1.98 ≈ 5.98 ≈ 6
O = 0.0381 / 0.0381 = 1
xi) Therefore the empirical formula searched is C₃H₆O.
Ответ:
Have you ever noticed if the salt you're using says it's "iodized"? Iodine is a micronutrient, which means we need it in small quantities to be healthy. Because iodine is relatively rare in many people's normal diets, it's added to table salt. Then when people salt their food, such as tasty turkey, stuffing and mashed potatoes, they're also getting iodine. In this science activity you'll use some kitchen-friendly chemistry to investigate which types of salt have iodine and which don't.