1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BlackZzzverrR [31]
3 years ago
13

A sample of the amino acid tyrosine is barely soluble in water. Would a peptide containing only a string of Tyr residues be more

or less soluble, assuming the total number of Tyr groups remains constant? Explain.
Chemistry
1 answer:
Misha Larkins [42]3 years ago
5 0

Answer:

Tyrosine is a polar and aromatic compound. its side chain acidity and basicity is neutral

if a peptide contain only a string of tyrosine residue especially l tyrosine the solubility increases more

Explanation:

even tyrosine number remains constant, tyrosine containing peptide will be more soluble. This peptide is soluble in 1 M HCl (100 mg/ml), with heating. The solubility in water (25 °C) is 0.45 mg/ml in the pH range 3.2 - 7.5.

2.0 mg/ml; at pH 9.5, the solubility is 1.4 mg/ml; and at pH 10, the solubility is 3.8 mg/ml.

You might be interested in
The more impressive the tail of a male peacock, the higher its chances of finding a mate. Female peacocks choose mates based on
Kipish [7]

C i took the test and got it correct

5 0
2 years ago
Help " anyone" plz ....
boyakko [2]

Answer:

letter A. i hope this is correct answer

5 0
2 years ago
Hydrochloric acid reacts with sodium hydroxide to form water and sodium chloride. Hydrochloric acid is an extremely acidic, clea
olya-2409 [2.1K]

Answer:

I think it is a).

Explanation:

3 0
3 years ago
What is the pOH of a 0.150 M solution of potassium nitrite? (Ka HNO2 = 4.5 x 10−4 )
yanalaym [24]

Answer:

11.9 is the pOH of a 0.150 M solution of potassium nitrite.

Explanation:

Solution :  Given,

Concentration (c) = 0.150 M

Acid dissociation constant = k_a=4.5\times 10^{-4}

The equilibrium reaction for dissociation of HNO_2 (weak acid) is,

                           HNO_2+H_2O\rightleftharpoons NO_2^-+H_3O^+

initially conc.         c                       0         0

At eqm.              c(1-\alpha)                c\alpha        c\alpha

First we have to calculate the concentration of value of dissociation constant (\alpha ).

Formula used :

k_a=\frac{(c\alpha)(c\alpha)}{c(1-\alpha)}

Now put all the given values in this formula ,we get the value of dissociation constant (\alpha ).

4.5\times 10^{-4}=\frac{(0.150\alpha)(0.150\alpha)}{0.150(1-\alpha)}

4.5\times 10^{-4} - 4.5\times 10^{-4}\alpha =0.150\alpha ^2

0.150\alpha ^2+4.5\times 10^{-4}\alpha-4.5\times 10^{-4}=0

By solving the terms, we get

\alpha=0.0533

No we have to calculate the concentration of hydronium ion or hydrogen ion.

[H^+]=c\alpha=0.150\times 0.0533=0.007995 M

Now we have to calculate the pH.

pH=-\log [H^+]

pH=-\log (0.007995 M)

pH=2.097\approx 2.1

pH + pOH = 14

pOH =14 -2.1 = 11.9

Therefore, the pOH of the solution is 11.9

4 0
3 years ago
The first law of thermodynamics states that ΔE=Q-W. How is this also a statement of the principle of conservation of energy?
yaroslaw [1]
Hello I took this test just now and got 100% your correct answer would be C. Hope this helps.
4 0
3 years ago
Read 2 more answers
Other questions:
  • The table below shows two types of electromagnetic waves and three random applications of electromagnetic waves.
    13·2 answers
  • Fill in blanks plz help 23 points
    5·1 answer
  • Determine if the phrases describe a solid, liquid, or gas.
    13·2 answers
  • A 60.0 g block of iron that has an initial temperature of 250. °C and 60.0 g bloc of gold that has an initial temperature of 45.
    6·1 answer
  • Which lab safety rule do you think is the most important to follow in chemistry lab?
    9·1 answer
  • What is the smallest unit that makes up matter? A. molecules B. chemicals C. atoms D. alloys
    13·2 answers
  • Lol I don’t know (,:
    11·2 answers
  • Why is HCI a strong acid and HCIO a weak acid?
    12·1 answer
  • When convex mirrors are used for security purposes, the images they form
    9·1 answer
  • The velocity of a car changes from 10 m/s east to 30 m/s east in 4 seconds.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!