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
antoniya [11.8K]
3 years ago
12

A solution contains 0.10 m sodium cyanide and 0.10 m potassium hydroxide. solid zinc acetate is added slowly to this mixture. wh

at is the formula of the substance that precipitates first?
Chemistry
1 answer:
Brrunno [24]3 years ago
6 0
1) Zn(CH₃COO)₂(s) + 2KOH(aq) = Zn(OH)₂(s) + 2CH₃COOK(aq)

Ksp{Zn(OH)₂}=1.2*10⁻¹⁷

2) Zn(CH₃COO)₂(s) + 2NaCN(aq) = Zn(CN)₂(s) + 2CH₃COONa(aq)

Ksp{Zn(CN)₂}=2.6*10⁻¹³


Ksp{Zn(OH)₂}<Ksp{Zn(CN)₂}

Zn(OH)₂ precipitates first

You might be interested in
In the diagram, which letter represents the energy of the products?
inessss [21]

Answer:

D

Explanation:

8 0
4 years ago
Read 2 more answers
hydrolysis of decapeptide P with the enzyme trypsin affords the following fragments: Glu-Gly-Lys, Gln-Val-Ile, Ala-Ser-Phe-Lys.
ehidna [41]

Answer:

The sequence of an amino acid P is:

Glu-Gly-Lys-Ala-Ser-Phe-Lys-Gln-Val-Ile

Explanation:

Fragments obtained on hydrolysis of decapeptide P by the action of an enzyme named trypsin:

  • Glu-Gly-Lys,
  • Gln-Val-Ile
  • Ala-Ser-Phe-Lys

Fragments obtained on hydrolysis of decapeptide P by the action of an enzyme named chymotrypsin:

  • Lys-Gln-Val-Ile,
  • Glu-Gly-Lys-Ala-Ser-Phe

In order to determine the sequence of protein P , we will arrange fragments in such a way so that common fragments or the common parts of fragments should come under each other.

On arranging these fragments :

Glu-Gly-Lys-Ala-Ser-Phe

Glu-Gly-Lys

                   Ala-Ser-Phe-Lys

                                         Lys-Gln-Val-Ile

                                                Gln-Val-Ile

The sequence of an amino acid P is:

Glu-Gly-Lys-Ala-Ser-Phe-Lys-Gln-Val-Ile

3 0
3 years ago
Which of these best explains why a paper clip can float on water?
Tems11 [23]
The water has surface tension
3 0
4 years ago
Read 2 more answers
Why are reforestation and reclamation important to environmental health?
Viktor [21]

Answer:

Reforestation can be used to undo and rectify the effects of deforestation and improve the quality of human life by absorbing pollution and dust from the air, rebuilding natural habitats and ecosystems,reducing global warming via biosequestration of atmospheric carbon dioxide, and harvesting for resources, particularly.

Explanation:

5 0
3 years ago
On average an adults lung volume is 5 L convert to mL
RideAnS [48]
  • 1L=1000mL

\\ \sf\longmapsto 5L

\\ \sf\longmapsto 5(1000)

\\ \sf\longmapsto 5000mL

4 0
3 years ago
Other questions:
  • The Milky Way is classified as a ______ galaxy.
    15·2 answers
  • Calculate the standard enthalpy of formation of carbon disulfide (CS2) from it's elements, given that C(graphite) + O2(g) → CO2(
    9·1 answer
  • Which statement is true?
    9·1 answer
  • Student A pushed on the cart with a force of 500 N. Student B pushed on the other side of the cart. The cart did not move. How m
    13·1 answer
  • How long will it take the Sun to go around the galaxy once? a. 200 million years c. 100 thousand years b. 10 years d. 5 billion
    8·2 answers
  • _________-have definite shapes and volumes because particles are packed closely together and merely vibrate in place.
    5·1 answer
  • Taxonomic classification is a process of science that organizes living organisms by their structure, function, and relationships
    5·1 answer
  • I don't know what to do about this now. I like her a lot; I don't want to just give up on this because I see relationship potent
    14·2 answers
  • What is the number 6.02x10^23 also known as?
    9·1 answer
  • How many grams of oxygen are required to react with 13.0 grams of octane (C8H18) in the combustion of octane in gasoline?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!