2,221 Answered Questions for the topic organic chemistry

Organic Chemistry Chemistry Biochemistry

04/10/20

Chemistry question
Why is half-life such a useful concept for understanding radioactive processes? Having a half-life implies radioactive decay by alpha emission. A half-life is a characteristic value for a given... more
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Organic Chemistry Chemistry Biochemistry

04/10/20

Chemistry question

Choose the incorrect statement about fatty acids from the following. Fatty acids usually contain an even number of carbon atoms. Membrane lipids contain mostly unsaturated fatty acids. The melting... more
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Organic Chemistry Chemistry Biochemistry

04/08/20

Chemistry question
Which statement is true regarding catabolic pathways? Catabolic reactions consume energy. Catabolism occurs only in vertebrates.  Catabolic pathways are used to construct macromolecules such as... more
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Organic Chemistry Chemistry Biochemistry

04/08/20

Chemistry question
Which of the following sugars is predominantly levorotatory? galactose fructose starch sucrose glucose
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Organic Chemistry Chemistry Biochemistry

04/08/20

Chemistry question
How many isomers exist that have the molecular formula C4H10? three one four none two
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Organic Chemistry

04/08/20

Resorcinol + FeCl3
Do both OH of resorcinol be substituted with FeCl2 upon reacting with FeCl3 and no excess HCl product? or it will just substitute one of the H in the hydroxyl group plus an HCl product? Need help... more
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Organic Chemistry Chemistry Biochemistry

04/07/20

Chemistry question
Consider the ionic compound, sodium sulfate decahydrate salt, Na2SO4.10H2O a)      Calculate the molar mass of the salt and give appropriate units. Note the following atomic masses, Na = 23; S= 32;... more
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Organic Chemistry Chemistry Biochemistry

04/07/20

chemistry question
Given the following equation, which is the correct form of the conversion factor needed to convert the number of moles of O2 to the number of moles of Fe2O3 produced?           4Fe + 3O2 → 2Fe2O3
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Organic Chemistry Chemistry Biochemistry

04/07/20

chemistry question

Water has a specific heat of 1.00 cal/g°C and wood has a specific heat of 0.10 cal/g°C. Which substance requires more heat to be warmed from room temperature to 50°?A.  They both require the same... more
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Organic Chemistry

04/06/20

Hydrogen bonds form between the molecules of the hypothetical compound AH and do not form between BH molecules because

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Organic Chemistry

04/06/20

Which equation represents the change a strontium (Sr) atom will undergo to obtain a Nobel gas configuration?
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Organic Chemistry

04/06/20

As element 12 forms an ion, it
a) gains 2 electronsb) loses 2 electronsc) gains 1 electrond) losses 1 electrone) no correct response
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Organic Chemistry Chemistry Chemical Engineering

04/04/20

Potassium Hydroxide from Potassium sulfate
HelloHope you are fineI had reacted 2 pressures:Potassium Sulfate with Ca(OH)2Potassium Sulfate with NaOHI Mixed them with enough water in atmospheric situation then separate CaSO4 and NaSo4 with... more
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Organic Chemistry Chemistry

04/03/20

What are the different ways (variations) of driving and controlling an esterification reaction and how do they drive the reaction? What have chemists discovered to tweak, drive, and control it?
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04/02/20

When a 28.4 mL sample of a 0.416 M aqueous hydrofluoric acid solution is titrated with a 0.418 M aqueous potassium hydroxide solution,
When a 28.4 mL sample of a 0.416 M aqueous hydrofluoric acid solution is titrated with a 0.418 M aqueous potassium hydroxide solution,(1) What is the pH at the midpoint in the titration? (2) What... more
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Organic Chemistry Chemistry

04/02/20

A 24.9 mL sample of 0.227 M ethylamine, C2H5NH2, is titrated with 0.321 M perchloric acid.
A 24.9 mL sample of 0.227 M ethylamine, C2H5NH2, is titrated with 0.321 M perchloric acid.(1) At the titration midpoint, the pH is . (2) At the equivalence point, the pH is . 
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Organic Chemistry

04/02/20

What is the functional groups in Plavix
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Organic Chemistry

04/01/20

What changes can you maketo the reaction to increase the rate of the reaction
A(g)+B(g)->C(g)+D(g)
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Organic Chemistry

04/01/20

What is the heat released if 5.0g of C3H8 reacts completely with oxygen?
C3H8+5O2->3CO2+4H2O+488kJ
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Organic Chemistry Math Chemistry

04/01/20

gram/mol, gram/liter
A 3.68 gram sample of an unknown gas is found to occupy a volume of 1.53 L at a pressure of 805 mm Hg and a temperature of 44°C. The molecular weight of the unknown gas is  _____g/mol.A sample... more
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Organic Chemistry Math Chemistry Biochemistry

04/01/20

a sample of oxygen, helium-filled ballon?
A sample of oxygen gas occupies a volume of 7.02 L at 52.0°C and 0.650 atm.If it is desired to decrease the volume of the gas sample to 4.59 L, while increasing its pressure to 0.800 atm, the... more
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Organic Chemistry Chemistry Biochemistry Base

03/31/20

Chemistry question about ionic compound
In chemistry, any ionic compound (soluble or insoluble) that is formed from a reaction between an acid and a base is called a(n) _________. ionic compound substance salt product neutralization
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Organic Chemistry Chemistry Biochemistry Amphiprotic

03/30/20

Chemistry question about amphiprotic species
Which of these species are amphiprotic? Select all that are correct. H2PO4- H2O HSO4- Cl- H3PO4
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Organic Chemistry Chemistry Biochemistry Buffers

03/30/20

Chemistry question about buffers
Which sets of substances can act as buffers? Select all that are correct. NH3 and NH4Cl HNO2 and NaNO2 NaOH and NaCl NH3 and HCl HCl and NaCl I would like understand why some substances can... more
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Organic Chemistry Chemistry Biochemistry Acids

03/30/20

Chemistry question about properties of acids.
What properties do acids have in common? Select all that apply. They are caused by acid rain. They make some pigments change color. They are all solid substances. They react with metals to form... more
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