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
inn [45]
3 years ago
11

What is the pH of a 40.0 40.0 mL solution that is 0.11 0.11 M in CN − CN− and 0.21 0.21 M in HCN HCN ? The K a Ka for HCN is 4.9

× 10 − 9
Chemistry
1 answer:
cluponka [151]3 years ago
6 0

Answer:

pH=8.03

Explanation:

From the Henderson-Hasselbalch equation:

we know that

pH = pKa + log (base / acid)

plugging the values from the question we can write

pH = 8.31 + log (0.11 / 0.21)

pH = 8.31-0.280

pH=8.03

You might be interested in
Phase changes!a. Write out the Clapeyron equation and explain what it describes.b. Write out the Clausius-Clapeyron equation and
djverab [1.8K]

Answer:

Solutions in the attachment.

Explanation:

4 0
3 years ago
Answer the amount of miles of O2
lord [1]

Answer:

3

Explanation:

the answer is 3 because it is 3 for the o2 so 3 you <em>have </em><em>to </em><em>pay </em><em>more </em><em>attention </em><em>for </em><em>the </em><em>small </em><em>ditails </em>

5 0
2 years ago
Why do neutral atoms form ions?
Marina86 [1]
Since they can still be unstable...nuetral atoms have the same amount of protons to electrons but to be stable they need to fill up there outer shell by gaining or losing electrons
8 0
3 years ago
An animal cell has a 0.9% saline environment is placed into a solution that is 9% saline. What will happen to the cell
Softa [21]

The concentration of cell is less than that of the solution .

Hence the cell will be called as hypotonic and the solution will be called as hypertonic.

in order to balance the concentration on the two sides of cell (inside and outside in the solution) there will be movement of solvent particles (through semipermeable membrane ) from cell (lower concentration of solute) to solution (higher concentration of solute).

Thus cell will shrink.



7 0
3 years ago
Plz answer asap !!!!
Semmy [17]

Answer:it's c

Explanation:

..

6 0
2 years ago
Other questions:
  • When salt dissolves in water, what type of substance is formed? A heterogeneous mixture, because the different components are mi
    12·1 answer
  • Litmus paper is made from water-soluble dyes which are extracted from lichens. This paper is used as an acid-base indicator. Whi
    9·1 answer
  • Which is an example of an element? A) salt (NaCl) B) water (H20) C) silver (Ag) D) electron (e-)
    6·2 answers
  • A measure of kinetic energy of particle motion within a substance is_____.
    6·2 answers
  • Given the balanced equation, calculate the mass of product that can be prepared from 2.36 g of zinc metal.
    9·1 answer
  • A
    9·1 answer
  • Hydrogen bonds can be found between molecules of which of the following
    13·1 answer
  • Only some particles split up into smaller particles
    11·1 answer
  • HELP PLEASEEEEEEEEEEEEEEEEEE I CANT GO CANRVIL IF I CANT PASS THIS THEY WANNA SEE MY GRADES AND THIS WILL HELP ME GET MY GRADES
    15·1 answer
  • If 20 mL of gas is subjected to a temperature change from 10°C to 100°C and a pressure change from 1 atm to 10 atm,
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!