2,220 Answered Questions for the topic organic chemistry

Organic Chemistry Chemistry Biochemistry

10/26/20

Chemistry: Back Titration
50.9 mL of 1.16 M nitric acid is added to 29.9 mL of sodium hydroxide, and the resulting solution is found to be acidic.17.6 mL of 1.10 M calcium hydroxide is required to reach neutrality.What is... more
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Organic Chemistry Chemistry Biochemistry

10/26/20

Titration: Back Titration
36.8 mL of 1.92 M perchloric acid is added to 43.3 mL of sodium hydroxide, and the resulting solution is found to be acidic.26.7 mL of 0.693 M barium hydroxide is required to reach neutrality.What... more
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Organic Chemistry Chemistry Biochemistry

10/26/20

Titration: Back Titration
44.2 mL of 1.27 M hydroiodic acid is added to 22.6 mL of calcium hydroxide, and the resulting solution is found to be acidic.28.2 mL of 1.33 M sodium hydroxide is required to reach neutrality.What... more
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Organic Chemistry Science Chemistry Biochemistry

10/26/20

Titration: Back Titration
33.7 mL of 1.54 M hydrochloric acid is added to 31.2 mL of sodium hydroxide, and the resulting solution is found to be acidic.16.4 mL of 1.19 M barium hydroxide is required to reach neutrality.What... more
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Organic Chemistry Chemistry Acid And Bases

10/25/20

Question in the description

Experimentally, you can monitor conductivity of a solution to prove the presence of ions in solution.Consider the reaction of sulfuric acid, H2SO4, a strong acid, with barium hydroxide, Ba(OH)2, a... more
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Organic Chemistry Biochemistry

10/25/20

Conceptual biochemistry/organic question

Dipalmitoylphosphatidylcholine is the major component of a surfactant secreted into the lung alveoli (the “sacs” in your lungs which allow large amounts of surface area for oxygen and carbon... more
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Organic Chemistry Chemistry Biochemistry

10/24/20

Solution Stoichiometry
How many grams of Ag2CO3 will precipitate when excess (NH4)2CO3 solution is added to 63.0 mL of 0.763 M AgNO3 solution?2AgNO3(aq) + (NH4)2CO3(aq) Ag2CO3(s) + 2NH4NO3(aq)
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Organic Chemistry Chemistry Biochemistry

10/24/20

Titration: Molarity of Acid or Base
An aqueous solution of barium hydroxide is standardized by titration with a 0.166 M solution of perchloric acid.If 22.2 mL of base are required to neutralize 13.4 mL of the acid, what is the... more
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Organic Chemistry Chemistry Biochemistry

10/24/20

Dilution: Moles to Volume
You wish to make a 0.240 M hydrochloric acid solution from a stock solution of 12.0 M hydrochloric acid. How much concentrated acid must you add to obtain a total volume of 175 mL of the dilute... more
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Organic Chemistry Chemistry Biochemistry

10/24/20

Titration: Molarity of Acid or Base
An aqueous solution of hydrochloric acid is standardized by titration with a 0.175 M solution of calcium hydroxide.If 25.3 mL of base are required to neutralize 16.4 mL of the acid, what is the... more
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Organic Chemistry Chemistry Biochemistry

10/24/20

Titration: Molarity of Acid or Base
An aqueous solution of potassium hydroxide is standardized by titration with a 0.196 M solution of hydrochloric acid.If 21.9 mL of base are required to neutralize 25.0 mL of the acid, what is the... more
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Organic Chemistry Chemistry Biochemistry

10/24/20

Molarity: Ion Concentration
In the laboratory you dissolve 23.8 g of chromium(III) sulfate in a volumetric flask and add water to a total volume of 250 mL.What is the molarity of the solution?  M.What is the concentration of... more
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Organic Chemistry Chemistry Biochemistry

10/24/20

Molarity: Ion Concentration
In the laboratory you dissolve 20.3 g of barium acetate in a volumetric flask and add water to a total volume of 375 mL.What is the molarity of the solution?   M.What is the concentration of... more
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Organic Chemistry Chemistry Biochemistry

10/24/20

Combustion Analysis
When 6.508 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 20.42 grams of CO2 and 8.361 grams of H2O were produced.In a separate experiment, the molar mass of the... more
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Organic Chemistry Chemistry Biochemistry

10/24/20

Combustion analysis
A 9.418 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 15.69 grams of CO2 and 5.138 grams of H2O are produced.In a separate experiment, the molar... more
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Organic Chemistry

10/24/20

How many grams of O2 are needed to completely react with 5.0 g of butane in a butane lighter?
I was given the balanced equation: 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O. I have done the conversion to find that 5 g of butane is .09 moles of butane. I am unsure where to start when it comes to the... more
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Organic Chemistry Science Chemistry Biochemistry

10/24/20

The emission spectrum from atoms and molecules
a. Occurs only in the visible region of the electromagnetic spectrumb. Is a discrete spectrum that is unique to each atom or moleculec. Is a continuous spectrumd. Is a descrete spectrum that is the... more
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Organic Chemistry Science Chemistry Biochemistry

10/24/20

The value of ni if the observed wavelength is 657 nm is
The value of ni if the observed wavelength is 657 nm isa. 4b. 2c. 5d. 3 I think the answer is b. 2, since 657 nm is part of the Balmer Series (to n=2)
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Organic Chemistry

10/23/20

How to survive ochem

Hello,I am currently a senior and I stupidly left ochem tell my last semester and now I am worried about making sure I pass it the first time. Do you have any suggestions for making sure I am ready... more
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Organic Chemistry Science Chemistry Biochemistry

10/23/20

Please help me thx u
Baking soda is a white powder used for baking or cleaning. When you mix baking soda, NaHCO3, with vinegar, C2H4O2, you get a clear colorless liquid and bubbles of CO2. Specify the phase of each of... more
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Organic Chemistry Extraction

10/23/20

Chemistry extraction lab question
I recently did an extraction experiment in my organic chemistry class and I need help answering a question. We did a liquid liquid extraction and in the first trial we did, we used 1.6 mL of each... more
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Organic Chemistry Science Chemistry Biochemistry

10/22/20

calorimeter experiment
when learning about coffee-cup calorimetry, i have 3 questions regarding it that have been making me a bit confused.when using a coffee-cup calorimeter in an experiment, why is it important to... more
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Organic Chemistry

10/22/20

How could IR spectroscopy be used to distinguish between cyclohexanol and cyclohexene?
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Organic Chemistry Science Chemistry Biochemistry

10/21/20

coffee-cup calorimeter
When doing an experiment using a coffee-cup calorimeter, NaOH, and Acetic Acid: If some heat was lost to or gained from the surroundings what would happen to the measured ΔT? How does this affect... more
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Organic Chemistry Chemistry React

10/18/20

reaction of Grignard reagents with aldehydes and ketones
reaction of Grignard reagents with aldehydes and ketonesConditions of reaction?products formed?special notes ?mechanisms/Example of reaction?
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