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
Colt1911 [192]
3 years ago
9

How many moles are in 5.6x1025 molecules of calcium oxide?

Chemistry
1 answer:
Vlad1618 [11]3 years ago
8 0

Answer:

<h2>93.02 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{5.6 \times  {10}^{25} }{6.02  \times  {10}^{23} }  \\  = 93.023...

We have the final answer as

<h3>93.02 moles</h3>

Hope this helps you

You might be interested in
What will a balloon do to a cloth if its negatively charged
masya89 [10]

Answer:

This involves negatively charged particles (electrons) jumping to positively charged objects. When you rub the balloons against the fabric they become negatively charged. They take some of the electrons from the fabric and leave them positively charged.

Explanation:

Negative charges attract to positive charges. If a balloon is not rubbed with the wool cloth, it has an equal amount of negative to positive charges, so it will attract to a rubbed balloon. When both balloons are rubbed with the wool cloth, the both receive negative charges, so they will repel each other.

3 0
2 years ago
Explain why lime is added to lakes. Refer to the problem that exists and what lime does to the lakes.
aalyn [17]

Explanation:

Lime is added to lower the acidity of lakes when pH levels go too low.

Acidic environment is harmful to aquatic ecosystems. Acidity causes some minerals, such as phosphorus and calcium, in the water to become unavailable to aquatic organisms like plants and fishes ( This means the water hardness is reduced). The low nutrients cause stress and death in the aquatic environment lowering biodiversity.  Applying lime raises the pH to neutral levels and improves the health of the aquatic life in the lake. This also improves economic activities in the lake like fishing.

Learn More:

For more on acidicity of lakes check out;

brainly.com/question/3612253

brainly.com/question/3612253

#LearnWithBrainly

4 0
3 years ago
The stage of engine operation when both the intake and exhaust valves are closed is the _______ stage.        A. compression   B
Varvara68 [4.7K]
D. the exhaust valve
3 0
3 years ago
A carbon atom with 6 protons, 6 electrons, and 6 neutrons would have a mass number of
Nata [24]
12, electrons dont have mass. only protons and neutrons do
7 0
3 years ago
Where is ocean water the densest?
Vika [28.1K]

Answer:

your answer should be the bottom

sorry if im wrong

Explanation:

8 0
2 years ago
Other questions:
  • How does this article relate to me?
    14·2 answers
  • The student plans to conduct a spectrophotometric analysis to determine the concentration of Cu2+(aq) in a solution. The solutio
    9·1 answer
  • The breaking down or disintegration of substances such as rocks and minerals by physical, chemical, or biological processes is c
    9·2 answers
  • Which of the following is the general formula for a double replacement reaction?
    12·1 answer
  • What are the roles of producers, primary consumers, secondary consumers, tertiary consumers for the trophic levels in the energy
    14·1 answer
  • Alonzo and Meg were testing different surfaces to see which one had the least friction. They predicted that the car, seen above,
    14·2 answers
  • Which part of homeostasis is this adorable puppy balancing out with his little stuffed animal buddy?
    14·1 answer
  • Can someone please help me thx!!!
    6·1 answer
  • Write any three possible structures for octane,C8H18,and give their iupac names.
    9·1 answer
  • Please help with this question
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!