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
nlexa [21]
3 years ago
5

Write a balanced equation for double replacement of KOH+ZnCl2

Chemistry
1 answer:
Ugo [173]3 years ago
5 0

Answer :

Double replacement reaction : It is a type of reaction in which a positive cation and a negative anion of the reactants react to give a new compound as  a product.

AB+CD\rightarrow AD+CB

In this, A and C are the cations and B and D are the anions.

When one mole of potassium hydroxide react with the one mole of zinc chloride to give one mole of zinc hydroxide and 2 moles of potassium chloride.

The balanced chemical reaction is,

KOH+ZnCl_2\rightarrow Zn(OH)_2+2KCl

You might be interested in
What is the total amount of heat absorbed by 100.0
sergejj [24]

Answer:

Option (B) 6270J

Explanation:

The following were obtained from the question:

M = 100g

T1 = 30°C

T2 = 45°C

ΔT = 45 —30 = 15°C

C = 4.18J/g°C

Q=?

Q = MCΔT

Q = 100 x 4.18 x 15

Q = 6270J

Therefore, the total amount of heat absorbed is 6270J

7 0
3 years ago
calcium has atomic number of 20 how many electrons of a calcium atom are involved in chemical bonding
Lelu [443]

The answer is 2 electrons.


The electron configuration of calcium is 2:8:8:2

Calcium has two electrons in its outermost shell. These are its valence electrons and are the ones used in bonding with other elements.  Valence electrons of an atom are those electrons that are in its outer energy shell or that are available for bonding.

Calcium is a metal. When metals react with non-metals, electrons are transferred from the metal atoms to the non-metal atoms forming ions. The resulting compound is known  as an ionic compound.

For example, when calcium metal reacts with chlorine gas,   calcium gives up its two valence electrons and Chlorine accepts them resulting in a new substance called calcium chloride in which the two elements have ended up forming ionic bonds.

 


7 0
3 years ago
Read 2 more answers
What does atomic mass on the periodic table represent?
neonofarm [45]
The atomic mass on the periodic table represents the sum of number of protons and number of neutrons.

Atomic mass = Number of protons + number of neutrons

Hope this helps!
6 0
3 years ago
A reaction rate assay measures enzyme _______________; and a colorimetric endpoint assay measures ________________.
VMariaS [17]

Answer:

The correct option is: A. activity; concentration

Explanation:

A reaction rate essay is a laboratory method to determine the activity of an enzyme. It is necessary for determining the enzyme kinetics and inhibition.

Whereas, a colorimetric analysis is a method to determine the concentration of a chemical compound in a solution. Therefore, a colorimetric endpoint assay measures the concentration.

Therefore, Enzyme activity is measured by a reaction rate assay and the concentration is measured by a colorimetric endpoint assay.

4 0
3 years ago
Read 2 more answers
Why is it not advisable to wear black clothes in the afternoon​
Nimfa-mama [501]
Uhhh, well if the sun is out there is something called blackbody radiation. Wearing black clothes could absorb the sunlight just like solar panels on a house. ( black plates placed on houses) Plus you could get a heat stroke but its pretty rare.
3 0
3 years ago
Other questions:
  • When Earth is between the Moon and the Sun, the fully lit face of the Moon is seen from Earth. This phase of the Moon is called
    11·1 answer
  • Before the Internet, it was easier for small businesses to do business on a global scale. Choose the answer.
    8·2 answers
  • What is the charge of a magnesium ion?
    5·2 answers
  • An isotope contains 15 protons, 15 electrons, and 17 neutrons. What is the identity of the isotope?
    5·2 answers
  • How does electromagnetism play a role in space
    13·1 answer
  • Select the correct location on the image.
    15·1 answer
  • The reversible reaction, 4HCl(g) + Si (s) ⇌ SiCl4 (l) + 2H2 (g) , would be classified as a ______________ reaction.
    12·1 answer
  • 5. A sample of pure acetyl salicylic acid had a mass of 0.268 grams. It was dissolved in NaOH and diluted to 500.00mL in a volum
    15·1 answer
  • In the balanced chemical reaction shown below, what is the molar ratio of O2 to H2O
    15·1 answer
  • Blank is most if the compounds that make up living things?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!