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
LekaFEV [45]
3 years ago
8

Which has the higher percentage of aluminum, Al2O, or Al(NO3)3

Chemistry
1 answer:
Rzqust [24]3 years ago
8 0

Al₂O  has a higher percentage of aluminium.

Explanation:

To solve this problem, we have to compare the molar mass of the aluminium in each compound to one another as percentage of the whole compound:

Molar mass of Al₂O = 2(27) + 16 = 70g/mol

Molar mass of Al(NO₃)₃ = 27 + 3[14 + 3(16)] = 213g/mol

Percentage by mass of Al in Al₂O = \frac{2x27}{70} x 100 = 77%

Percentage by mass of Al in  Al(NO₃)₃ = \frac{27}{213} x 100 = 12.7%

Al₂O  has a higher percentage of aluminium.

learn more:

Molar mass brainly.com/question/2861244

#learnwithBrainly

You might be interested in
Explain the principle upon which separation is achieved in a distillation column.
aalyn [17]

Answer:

The fundamental principle involves the formation of equilibrium and separation into distillate and bottoms governed by the equilibrium composition curve , number of stages and the purity with which the distillate is required.

Explanation:

Distillation is a type of the separation process by physical means of a mixture on basis of its difference in boiling point or vapor pressure .  

Where we can just heat the mixture and separate out the components i.e the component with lower boiling point will form vapor easily and can be later condensed whereas the component with higher boiling point will remain as residue.

In case of a distillation column the same principle is applied at different stages to separate multiple components .The stages are known as trays or plates . In general , there is a certain liquid on each of the plate, and the arrangements are made for the ascending vapors to pass through the liquid and make contact with it . The fundamental principle involves the formation of equilibrium and separation into distillate and bottoms governed by the equilibrium composition curve , number of stages and the purity with which the distillate is required.

7 0
3 years ago
Read 2 more answers
Mantle convection is a process of that creates circular currents in the asthenosphere. As a result, the plates slowly move.
LUCKY_DIMON [66]

Answer:

<em>Rigid plates that move around Earth's surface is called tectonic plates. </em>

Explanation:

Lithosphere is rigid and relatively cold and is the outer surface of the planet. The convective motions of maintenance break the lithosphere into plates.

This place that a form can move in any direction, can move towards each other, can move away and push each other which is the reason for formation of mountains for shifting of continents for making of ocean basin.  

8 0
3 years ago
___ is the force on a dropped ball
poizon [28]

Answer:

gravity

Explanation:

the force is gravity that pulls the ball downward

4 0
3 years ago
Read 2 more answers
What is the mass of 7.1 x 1021 molecules of glucose?
choli [55]

Answer:

7249.1

Explanation:

Multiply 7.1x1021= 7249.1

7 0
3 years ago
Why did oceans not exist on Earth nearly 4 billion years ago?
rusak2 [61]
B. water remained a gas because earth was very hot
7 0
4 years ago
Other questions:
  • Help me please............…
    15·1 answer
  • A 40.27 g sample of a substance is initially at 24.8 °c. after absorbing 2099 j of heat, the temperature of the substance is 148
    13·1 answer
  • A series of five calibration standards 25, 50, 75 and 100 mg/L Potassium is required to be made from a 1000mg/L Potassium standa
    11·1 answer
  • Water boiling and turning into steam<br><br> is a chemical or physical change?
    6·2 answers
  • A chemical reaction is the process by which a ___ takes place
    14·2 answers
  • If 3.0 g of NH3 reacts with 5.0 g of HCl, what is the limiting reactant?
    12·1 answer
  • Which bond is most polar?
    5·1 answer
  • Why is conical flask used in the freezing point of naphthalene activity?
    11·1 answer
  • Which best describes a similarity between power plants that use water as an energy source and those that use wind as an energy s
    9·1 answer
  • Please help me this is my last question
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!