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
Nookie1986 [14]
3 years ago
9

Biuret reagent will indicate the presence of

Chemistry
1 answer:
weeeeeb [17]3 years ago
5 0
Biuret reagent will indicate the presence of protein in a given sample. It is also known as the Piotrowski's test. This reagent consists of copper (II) sulfate and sodium hydroxide. It detects peptide bonds by the reaction of the copper ions in an alkaline solution. The copper ions would form violet colored complexes when peptide is present in the solution. From this test, concentration can be calculated since the intensity of the color depends on the amount of peptide bonds and according to the Beer-Lambert law concentration and the absorption of light is proportional. The concentration is calculated by a spectrophotometric technique at a wavelength of 540 nm. 
You might be interested in
Imagine if Rutherford conducted his scattering experiment, and his prediction about the movement of alpha particles held true Wh
IRINA_888 [86]

Answer:

The plum pudding model would have to be true as well because it shows that electrons are scattered within an atom.

Explanation:

I took the test and got it right :)

4 0
3 years ago
Identify the Lewis acid in this balanced equation: SnCl4 + 2Cl− → SnCl62−
Grace [21]

Answer:

The answer is SnCI4.

Explanation:

5 0
3 years ago
Read 2 more answers
Which of the following is not a renewable resource
BabaBlast [244]
Natural gas is nonrenewable, once its used you have to get more, after its all used up you cant use it no more.
4 0
4 years ago
Why does iron have no oxidation state corresponds to loss of all it's valence electrons?
olganol [36]

Answer:

When an element loses an electron, its oxidation number increases.

Explanation:

The oxidation number of an element indicates the hypothetical charge of an atom in a compound. It is hypothetical because, in the context of a compound, the elements may not necessarily be ionic. When the number of electrons associated with an atom changes, its oxidation number also changes. When an element loses an electron, its oxidation number increases.

7 0
4 years ago
Of a cell membrane allows it to control material Entering and leave a cell?
Nata [24]

Answer:

The cell membrane is the outer layer of the cell. The primary function of the cell membrane is to regulate what substances enter and leave the cell. The cell membrane is selectively permeable, or "semi-permeable", meaning that the membrane only allows certain substances to enter or leave the cell.

Explanation:

already had this question and this is the correct answer

4 0
3 years ago
Other questions:
  • 4 grams of carbon react with an unlimited amount of H2O. The reaction is: C + H2O → CO + H2is the equation balanced?
    10·2 answers
  • Where are many foods imported from during our winter? Why can they grow food when we can't?
    5·1 answer
  • HURRY PLEASE
    9·1 answer
  • Gallium is produced by the electrolysis of a solution made by dissolving gallium oxide in concentrated NaOH ( aq ) . Calculate t
    6·1 answer
  • Write the word equation for this please
    10·1 answer
  • A bar of snickers contains 28 g of sugar (C6H12O6)
    11·1 answer
  • BALANCING CHEMICAL EQUATIONS WORKSHEET
    9·1 answer
  • The distance time graphs for two objects are shown below: look at the picture. Which statement is true? Both objects move at var
    5·1 answer
  • BRAINLIEST
    14·2 answers
  • Why did you test the reaction mixture with starch/iodide paper before starting the separatory funnel steps
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!