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
Pepsi [2]
3 years ago
10

What is fry's reagent used for?

Chemistry
1 answer:
dmitriy555 [2]3 years ago
4 0
<span>Fry's Reagent a chemical used on metals such as firearms, it corrodes them and allows you to see the etching that could have been scratched off by the criminal, such as the serial number of the gun.  It is </span><span>a chemical that can restore a serial number that has been removed from a gun by dissolving the area that has been flattened when the number was stamped on.</span>
You might be interested in
A solution made by dissolving 33 mg of insulin in 6.5 mL of water has an osmotic pressure of 15.5 mmHg at 25°C. Calculate the mo
Liula [17]

<u>Answer:</u> The molar mass of the insulin is 6087.2 g/mol

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

\pi=iMRT

Or,

\pi=i\times \frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}\times RT

where,

\pi = osmotic pressure of the solution = 15.5 mmHg

i = Van't hoff factor = 1 (for non-electrolytes)

Mass of solute (insulin) = 33 mg = 0.033 g   (Conversion factor: 1 g = 1000 mg)

Volume of solution = 6.5 mL

R = Gas constant = 62.364\text{ L.mmHg }mol^{-1}K^{-1}

T = temperature of the solution = 25^oC=[273+25]=298K

Putting values in above equation, we get:

15.5mmHg=1\times \frac{0.033\times 1000}{\text{Molar mass of insulin}\times 6.5}\times 62.364\text{ L.mmHg }mol^{-1}K^{-1}\times 298K\\\\\text{molar mass of insulin}=\frac{1\times 0.033\times 1000\times 62.364\times 298}{15.5\times 6.5}=6087.2g/mol

Hence, the molar mass of the insulin is 6087.2 g/mol

8 0
3 years ago
In which material are the particles arranged in a regular geometric pattern?
Illusion [34]
 I think only solids arrange in a regular geometric pattern, so i2
6 0
3 years ago
A graph that demonstrates the amount of substance that dissolve in given quantity of solvent st specificied conditions
Basile [38]

Answer:

Beef curtains

Explanation:

8 0
3 years ago
Read 2 more answers
The gold foil experiment resulted in two major discoveries which were made about the structure of the atom. what were they
DanielleElmas [232]
It showed that the nucleus is positively charged, and that the atom isn't just made of electrons.
8 0
3 years ago
Will mark brainliest. Anyone willing to do this?
Norma-Jean [14]

Answer:

ACTIVITY 1

Sample 1 has a stronger taste of lemon, and is more sour.

Sample 2 has a sweeter taste, my guess is because there's more sugar:lemon juice ratio.

7 0
3 years ago
Other questions:
  • If the standard solutions had unknowingly been made up to be 0.0024 m agno3 and 0.0040 m k2cro4, would this have affected your r
    6·2 answers
  • During the recharge of the lead storage battery, the chemical reaction that occurs is A.)nonspontaneous.
    12·1 answer
  • Determine the number of atoms in 3.62 mL of mercury. The density of mercury is 13.5g/mL
    12·1 answer
  • DNA contains genes that provide instructions for inherited traits. What is the relationship between the genes and chromosomes?
    6·1 answer
  • JOIN MY AMONG US GAME THE CODE IS QGORMF
    5·2 answers
  • Why does the moon appear to be so bright in the sky
    15·2 answers
  • Are all elements created equal? Provide evidence for why or why not.​
    8·1 answer
  • What type of cell has membrane bound organelles?
    12·1 answer
  • 1 2 3 4 5 6 7 8 9 10 Suna passes an electric current through a sample of clear, colorless, and odorless liquid. As the experimen
    11·1 answer
  • A gas in a rigid container at 25°C has a pressure of 0.96 atm. A change in temperature causes the pressure to increase to 1.25 a
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!