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
Nata [24]
3 years ago
5

How many oxygen atoms are in 2.80 g of quartz?

Chemistry
1 answer:
disa [49]3 years ago
4 0
The chemical formula for quartz is SiO₂
Percentage by mass of oxygen = (2 x 16) x 100 / (28 + 2 x 16)
Percentage by mass of oxygen = 53.3%

Mass of oxygen in sample = 0.533 x 2.8
Mass of oxygen = 1.49 grams

Moles of oxygen = 1.49 / 16
Moles = 0.093

One mole contains 6.02 x 10²³ particles
Thus, the atoms of oxygen:
0.093 x 6.02 x 10²³ 
= 5.6 x 10²²
You might be interested in
What is natural selection help plz help
Mars2501 [29]

Answer:

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

Explanation:

Hope this helps! Please consider marking brainliest! I hope you have an amazing day. Always remember, your smart and you got this! -Alycia :)

6 0
2 years ago
Read 2 more answers
Can you describe the situations when Greek prefixes are used?
Black_prince [1.1K]

Answer:

Here's what I get  

Explanation:

At the introductory level of chemistry, I can think of only two situations when you use Greek prefixes.

They indicate the number of atoms or groups in a molecule when you are naming a compound.

1. Binary covalent compounds

For example, P₂S₅ is diphosphorus pentasulfide.

2. Hydrates

For example, Na₂SO₄·10H₂O is sodium sulfate decahydrate.

7 0
3 years ago
Explain why it is not a good idea to throw an aerosol can into a fire. Which gas law applies?
Helga [31]
The gas inside the can and the can’s volume are both constant.
The gas pressure increases with increasing temperature.
The can will burst if the pressure becomes great enough.
The gas law that applies is Gay-Lussac’s law.
5 0
3 years ago
Read 2 more answers
Minerals can form from the crystallization of
lesya692 [45]
Crystallization is the process of atoms forming a material with a crystal structure
6 0
3 years ago
Read 2 more answers
which of the following is an organic compound? carbon monoxide, sodium chloride, sulfur oxide, water,
pochemuha
I think carbon monoxide and sodium chloride are the organic compounds.




I hope this helps :-)  

5 0
3 years ago
Other questions:
  • Which of the following are most directly involved in<br> chemical bonding?
    14·1 answer
  • Which is less likely to be a relatable source of information the webpage of a university or the webpage a scientist who is tryin
    8·1 answer
  • Which of the following statements best describes what happens to water during vaporization?
    12·2 answers
  • Which of these most likely causes a total solar eclipse?
    7·2 answers
  • Explică rolul chimiei în protejarea mediului înconjurător?
    13·1 answer
  • What is the mass percentage composition of O in L-carnitine (C7H15NO3), a compound that is taken as a dietary supplement to re-
    7·1 answer
  • What do you think is the primary reason why the Unionid mussel population declined whenever there is a dramatic increase in the
    7·1 answer
  • If 8.2 L of hydrogen gas at STP are produced in this<br> reaction, how many atoms of sodium react?
    13·1 answer
  • Select the example of symbiosis, chosen from the list below that is best described by the statement shown.
    7·1 answer
  • This is my question in imageIf 16.0 grams of aluminum oxide were actually produced, what is the percent yield of the reaction be
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!