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
zhuklara [117]
2 years ago
10

I have asked this already!!!!!

Chemistry
1 answer:
stellarik [79]2 years ago
6 0

Answer:

01) Cu tting hair is a physical change. reason-1

02) Cooking can be either one, but I would choose chemical reason-3

03) Ice cream melting is a physical change reason-2

Explanation:

You might be interested in
Which of the following is not an example of a chemical change? (hint:
Lena [83]

Answer:

C. Boiling water

Explanation:

Boiling water is a physical change only; the H20 molecules are moving from a liquid state to a gas state and not turning into a new substance.

3 0
3 years ago
Increasing the amount of water in which the sugar is dissolved will increase the frequency of collisions between the sucrose mol
Sonja [21]

Answer: The given statement is true.

Explanation:

When we increase the amount of solvent which is water in this case then it means there will occur an increase in the molecules. Hence, there will be more number of collisions to take place with increase in number of molecules.

Therefore, more is the amount of interaction taking place between the molecules of a solution more will be its rate of hydrolysis.

Thus, we can conclude that the statement increasing the amount of water in which the sugar is dissolved will increase the frequency of collisions between the sucrose molecules and the water molecules resulting in an increase in the rate of hydrolysis, is true.

8 0
3 years ago
Will the boiling point of water be higher or lower in the maintains, where the altitude is high, and the pressure is low ?
Vlad [161]
Higher low preccure
4 0
3 years ago
How many Liters are in 1.245 x 10​ 6​mL?
Kamila [148]
1245 liters because you move the decimal place over to the right six times
4 0
3 years ago
A galvanic cell consists of one half-cell that contains Ag(s) and Ag+(aq), and one half-cell that contains Cu(s) and Cu2+(aq). W
Agata [3.3K]

Answer : The 'Ag' is produced at the cathode electrode and 'Cu' is produced at anode electrode under standard conditions.

Explanation :

Galvanic cell : It is defined as a device which is used for the conversion of the chemical energy produces in a redox reaction into the electrical energy. It is also known as the voltaic cell or electrochemical cell.

In the galvanic cell, the oxidation occurs at an anode which is a negative electrode and the reduction occurs at the cathode which is a positive electrode.

We are taking the value of standard reduction potential form the standard table.

E^0_{[Ag^{+}/Ag]}=+0.80V

E^0_{[Cu^{2+}/Cu]}=+0.34V

In this cell, the component that has lower standard reduction potential gets oxidized and that is added to the anode electrode. The second forms the cathode electrode.

The balanced two-half reactions will be,

Oxidation half reaction (Anode) : Cu(s)\rightarrow Cu^{2+}(aq)+2e^-

Reduction half reaction (Cathode) : Ag^{+}(aq)+e^-\rightarrow Ag(s)

Thus the overall reaction will be,

Cu(s)+2Ag^{+}(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)

From this we conclude that, 'Ag' is produced at the cathode electrode and 'Cu' is produced at anode electrode under standard conditions.

Hence, the 'Ag' is produced at the cathode electrode and 'Cu' is produced at anode electrode under standard conditions.

7 0
3 years ago
Other questions:
  • To cook a steak to medium-rare, it needs to have an internal temperature of 135
    7·1 answer
  • If one molecule of glucose (C6H12O6) reacts completely with three molecules of oxygen (O2), what is the TOTAL number of atoms th
    7·2 answers
  • Which of these scenarios involve a reaction that is at equilibrium?
    7·2 answers
  • How many hydrogen atoms are attached to each carbon participating in a double bond?
    6·1 answer
  • The periodic table and how to use?
    14·1 answer
  • What is the pOH if the pH is 11?
    8·1 answer
  • 14. A researcher Is curious to find out what effect classical music has on people's level of relaxation
    14·1 answer
  • Select the correct answer.
    10·1 answer
  • What type of reaction is 4Na + O2 --> 2Na2O?
    9·1 answer
  • Complete and balance the following:(c) FeS(s) + HCl (aq) →
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!