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
nordsb [41]
3 years ago
9

Can someone show their work on how to do this: Calculate the number of moles of Al2O3 present in 23.87g. (Molar mass of Al2O3= 1

02.0g/mol)

Chemistry
1 answer:
vodomira [7]3 years ago
6 0

Answer:

0.234 moles

Explanation:

moles of Al2O3 = mass / molar mass

moles of Al2O3 = 23.87g / 102.0g/mol

moles of Al2O3 = 0.234 moles (to three significant figures)

You might be interested in
How can mechanical waves help in the treatment of cancer?
Andreas93 [3]

Mechanical waves can help in the treatment of cancer due to heat generated by the high frequency waves.

<h3>What is mechanical wave?</h3>

A mechanical wave is a wave that requires material medium for its propagation, example include;

  • water waves,
  • sound waves, and
  • seismic waves.

<h3> Mechanical waves in treatment of cancers</h3>

Sound wave in example of mechanical wave because it requires material medium for its propagation.

High-frequency sound waves (HIFU) is used in the  treatment  of cancer because the strong beam generates heat which is directed to a specific part of a cancer.

The heat generated destroys the cancer cells.

Thus, mechanical waves can help in the treatment of cancer due to heat generated by the high frequency waves.

Learn more about mechanical waves here: brainly.com/question/9242091

#SPJ1

4 0
1 year ago
HELP ME OUT PLS!!!
alina1380 [7]
D Direction of motion I hope this helps
4 0
2 years ago
What general rule can be followed when choosing a type of solvent for a particular solute
ehidna [41]
General 'rule' - "like dissolves like". The solubility of a solute in a solvent (that is, the extent of the mixing of the solute and solvent species) depends on a balance between the natural tendency for the solute and solvent species to mix and the tendency for a system to have the lowest energy possible.

Hope this helps :p
4 0
2 years ago
Sebastian wants to write the chemical formula for phosphorus tetraoxide. He identifies the chemical symbols as P and O. Which ad
denis23 [38]

Answer:

The answer is B

Explanation:

6 0
3 years ago
Which one of the following is not equal to 100 meters
Katena32 [7]
Where is the link can’t do any work without it
7 0
2 years ago
Other questions:
  • Calculate the average atomic mass of chromium. It's composition is: 83.79% with a mass of 51.94 Amy; 9.50% with a mass of 52.94
    6·1 answer
  • The lens that is within the eyepiece of the light microscope is called the: A- Scanning B- Low power C- High Power D- Ocular
    5·1 answer
  • What option would this be? The following equation is a example of _______ decay.
    6·1 answer
  • How much heat is required to warm 1.30 l of water from 24.0 ∘c to 100.0∘c? (assume a density of 1.0g/ml for the water.)?
    10·1 answer
  • Grams smallest to kilograms and milligrams
    10·1 answer
  • A sheet of aluminum foil weighs 2.07g. If the sheet is 24cm long and 20cm wide, how thick is the sheet in micrometers? The densi
    10·1 answer
  • How did technology impact the development of the cell theory?
    5·1 answer
  • What is deposition ?
    11·2 answers
  • How many grams are in 3.0 moles of H2O
    15·1 answer
  • Read excerpt and answer 3 questions I’ll mark brainliest. Pls thank you
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!