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
7nadin3 [17]
3 years ago
7

What is weathering?

Chemistry
2 answers:
Arisa [49]3 years ago
7 0
It’s B. I saw this before and know the answer
snow_tiger [21]3 years ago
4 0

Answer:

B.

the process by which rocks are broken down into sediment

You might be interested in
What was the 'elixir of life' ​
4vir4ik [10]
A magical or medicinal potion/solution
4 0
3 years ago
Calcium has an atomic number of 20. How many electrons does calcium lose when forming an ionic bond with another ion?
oksano4ka [1.4K]
2 electrons. it has electron configuration of 2.8.8.2 hence the last 2 will be lost for it to gain stable.
if you need more explanation on periodic table you can reach me at [email protected]
5 0
3 years ago
H-E-L-P!!...!! ʕ ꈍᴥꈍʔ​
N76 [4]

Answer:

the correct answer is (2)

Explanation:

4 0
2 years ago
Read 2 more answers
What are the primary chemical components present in a phosphate buffer at ph 7.4? H3po4 and po43–?
fenix001 [56]

Answer :

The correct answer for primary component of phosphate buffer at pH = 7.4 is H₂PO₄⁻ and HPO₄²⁻ .

<u>Buffer solution :</u>

It is a solution of mixture of weak acid and its conjugate base OR weak base and its conjugate acid . It resist any change in solution when small amount of strong acid or base is added .

<u>Capacity of a good buffer : </u>

A good buffer is identified when pH = pKa .

From Hasselbalch - Henderson equation which is as follows :

pH = pka + log \frac{[A^-]}{[HA]}

If [A⁻] = [HA] ,

pH = pka + log 1

pH = pKa

This determines that if  concentration of  weak acid  and its conjugate base are changed in small quantity , the capacity of  buffer to maintain a constant pH is greatest at pka .  If the amount of [A⁻] or [HA] is changed in large amount , the log value deviates more than +/-  1M and hence pH .

Hence Buffer has best capacity at pH = pka .

<u>Phosphate Buffer : </u>

Phosphate may have three types of acid-base pairs at different pka ( shown in image ).

Since the question is asking the pH = 7.4

At pH = 7.4 , the best phosphate buffer will have pka near to 7.4 .

If image is checked the acid - base pair  " H₂PO₄⁻ and HPO₄²⁻  has pka 7.2 which is near to pH = 7.4 .

Hence we can say  , the primary chemical component of phosphate buffer at pH = 7.4  is H₂PO₄⁻ and HPO₄²⁻  .


8 0
3 years ago
Please answerrrrrrrr
mrs_skeptik [129]

Answer:1. Energy 2. Medium 3. Original position 4. Waves 5. Matter

Explanation:

3 0
3 years ago
Other questions:
  • Practice Problems (show all work):
    6·1 answer
  • Which of the following is a correct formula unit of an ionic compound?
    11·2 answers
  • Which statement best explains the process occurring in step 4 of the life<br>cycle?​
    12·1 answer
  • A solution has a [OH-] of 1 × 10-9. What is the pOH of this solution?
    12·1 answer
  • Which redox equation is correctly balanced?
    15·1 answer
  • What is the dominant greenhouse component and why?
    11·1 answer
  • Write the complete balanced equation for the reaction between iron (III) oxide (Fe2O3) and water (H2O). You do not need to make
    8·2 answers
  • What is the main cause of earthquakes?
    8·1 answer
  • Where do we get our energy from ?
    14·2 answers
  • What is the agent that causes frost wedging?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!