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
Slav-nsk [51]
2 years ago
10

Which of these changes is a chemical change?

Chemistry
1 answer:
Katyanochek1 [597]2 years ago
4 0
It’s d I’m pretty sure that’s correct
You might be interested in
2p is the correct representation for the sub-shell with n = 2 and l = 1.
boyakko [2]

Explanation:

Principle Quantum Numbers : It describes the size of the orbital and the energy level. It is represented by n. Where, n = 1,2,3,4....

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

s = 1 orbital

p = 3 orbitals

d = 5 orbitals

f = 7 orbitals

For n = 4

l = 0 to (n-1) = 0 to 3 = (4s , 4p , 4d , 4f)

Number of subshells = 4

Number of orbitals =         1 + 3 + 5 + 7  = 16

The maximum number of electrons the n = 4 shell can contain:

Each orbital can holds upto two electrons, then 16 orbitals will have :

16\times 2=32

32 is the maximum number of electrons the n = 4 shell can contain

6 0
3 years ago
Read 2 more answers
What is the concentration of the hydroxide ion? Given that the concentration of the hydronium ion is 2.3 X 10^-7 M
professor190 [17]

Answer:

4.35 * 10^-8 M

Explanation:

Since the concentration of the hydronium ion= 2.3 X 10^-7 M

And we know that;

[H3O^+] [OH^-] = 1 * 10^-14

[H3O^+]  = concentration of the hydronium ion

[OH^-] = concentration of the hydroxide ion

So;

[OH^-] =1 * 10^-14/[ H3O^+]

But [H3O^+] = 2.3 X 10^-7 M

[OH^-] = 1 * 10^-14/2.3 X 10^-7

[OH^-] = 4.35 * 10^-8 M

8 0
3 years ago
Plz Help Will Upvote
My name is Ann [436]
A.helium<span>Hydrogen is the most abundant element in the Universe; helium is second. However, after this, the rank of abundance does not continue to correspond to the atomic number; oxygen has abundance rank 3, but atomic number 8.</span>
3 0
3 years ago
Why doesn't the earth,s shadow get cast onto the moon every month ?
soldi70 [24.7K]
Becuz the sun refelt off the earth and on to the moon.

8 0
3 years ago
The reaction of iron ore with carbon follows the equation: 2 Fe2O3 + 3 C 4 Fe + 3 CO2.
ale4655 [162]

Answer:

The person writes a coefficient of 2 in front of Fe2O3 but then writes a 4 for the number of iron (Fe) atoms. Explain this difference.

Explanation:

4 0
3 years ago
Other questions:
  • #NEEDHELPASAP #MARINESCIENCE
    5·1 answer
  • Sample Response: Jade's error occurs in the top-right square of the Punnett square. In this square, she identifies the phenotype
    10·1 answer
  • What type of isotope undergoes radioactive decay?
    9·2 answers
  • Mrs. Rushing has 3 chemistry classes with 24 students in each. An experiment calls for each student to use 4 test tubes. How man
    11·2 answers
  • Of the following, where would we most likely find the most abundant storage of water?
    5·2 answers
  • If you have 9900 g of donuts, how many donuts do you have if each donut has a mass of 159 g?
    10·2 answers
  • The pressure of 2.73 mol of an ideal gas in an enclosed rigid container at 20.3° C is 153kPa. What is the volume of the containe
    8·1 answer
  • 5. According to the model, why temperature dependent? equilibrium constants for a chemical reaction are
    13·1 answer
  • Why dose fluorine and chlorine have similar reactive
    6·1 answer
  • 5. Name the compound which contain Strontium, Fluorine, and Oxygen. options: Strontium fluorate Strontium fluoride Strontium chl
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!