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dezoksy [38]
3 years ago
10

One gram-mole of methyl chloride vapor is contained in a vessel at 100 c and 10 atm. use the ideal gas equation of state to esti

mate the system volume
Chemistry
1 answer:
motikmotik3 years ago
5 0
The ideal gas equation is expressed as,

     PV = nRT

where P is the pressure,
           V is the volume,
           n is the number of moles,
           R is the universal gas constant, and
           T is temperature

From this, we get the expression for V.
    
     V = nRT/P

Substituting the known values,
  
   V = (1 mol)(0.0821 L.atm/mol K)(100 C + 273.15) / 10 atm
    V = 3 L

<em>ANSWER: 3L</em>
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which of the following amino acids are used to measure the protein concentration by UV? A. His B. Pro C. Trp D. Phe E. Tyr
Goryan [66]

Answer:

C. Trp D. Phe E. Tyr

Explanation:

The concentration of a protein has a direct relation with absorbance of the protein in a UV spectrophotometer. The formula which relates concentration with absorbance is described as under:

                A = ∈ x c x l

where, A = Absorbance

            ∈ = Molar extinction co-efficient

            c  = Concentration of absorbing species i.e. protein

             l  = Path length of light

       

Tryptophan (Trp), phenylalanine (Phe ) and tyrosine (Tyr) are three aromatic amino acids which are used to measure protein concentration by UV. It is mainly because of tryptophan (Trp), protein absorbs at 280 nm which gives us an idea of protein concentration during UV spectroscopy.

The table depicting the wavelength at which these amino acids absorb and their respective molar extinction coefficient is as under:

Amino acid                Wavelength            Molar extinction co-efficient (∈)

Tryptophan                     282 nm                        5690

Tyrosine                          274 nm                        1280

Phenylalanine                 257 nm                        570

In view of table above, we can easily see that Molar extinction co-efficient (∈) of Tryptophan is highest amongst all these 3 amino acids that is why it dominates while measuring concentration.

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3 years ago
What role do guanacos play in the Andes Mountains ecosystem?.
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What is the total number of strontium and phosphate ions you have added to your solution after two or three shakes? why are ther
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<span>Assuming that there are 36 strontium and 24 phosphate, there aren’t any equal cations and anoins because in theory only one ionic bond is formed by a strontium with each phosphate ion. To the point that a cation will eventually have an excess.</span>

4 0
3 years ago
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myrzilka [38]

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4 0
2 years ago
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Why do you think large differences in temperature between the wet bulb and dry bulb thermometers are possible only at higher tem
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Answer:

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Explanation:

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