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
Vinvika [58]
3 years ago
10

What expression approximates the volume of O2 consumed, measure at STP, when 55 g of Al reacts completely with excess O2?2 Al(s)

+ 3 O2(g) ---> 2 Al2O3(s)0.5 x 1.5 x 22.40.5 x 0.67 x 22.42 x 0.67 x 22.42 x 1.5 x 22.4
Chemistry
1 answer:
nikdorinn [45]3 years ago
3 0

Answer : The volume of O_2 consumed are, 0.75\times 2\times 22.4 L.

Explanation :

The balanced chemical reaction will be:

4Al(s)+3O_2(g)\rightarrow 2Al_2O_3(s)

First we have to calculate the moles of Al.

\text{Moles of }Al=\frac{\text{Mass of }Al}{\text{Molar mass of }Al}

Molar mass of Al = 27 g/mole

\text{Moles of }Al=\frac{55g}{27g/mol}=2mole

Now we have to calculate the moles of O_2.

From the reaction we conclude that,

As, 4 mole of Al react with 3 moles of O_2

So, 2 mole of Al react with \frac{3}{4}\times 2=0.75\times 2 moles of O_2

Now we have to calculate the volume of O_2 consumed.

As we know that, 1 mole of substance occupies 22.4 liter volume of gas.

As, 1 mole of O_2 occupies 22.4 liter volume of O_2 gas

So, 0.75\times 2 mole of O_2 occupies 0.75\times 2\times 22.4 liter volume of O_2 gas

Therefore, the volume of O_2 consumed are, 0.75\times 2\times 22.4 L.

You might be interested in
Write the cell notation for the voltaic cell that incorporates each of the following redox reactions:(a) Al(s) + Cr³⁺(aq) → Al³⁺
Sladkaya [172]

The cell notation for the given voltaic cell is as follows

Al(s) | Al³⁺(aq) || Cr³⁺ (aq) | Cr(s)

<h3>What is a voltaic cell?</h3>

The device in which electrons are transferred through an external source is known as a voltaic cell.

The electron flow of a Voltaic cell allows redox reactions to produce energy in the form of electricity.

It converts the energy of spontaneous redox reaction into electrical energy

An anode, a cathode, and a salt bridge are all parts of a voltaic cell's setup. The salt bridge serves to neutralize the system.

To write the cell notation, identify the oxidation and reduction reactions.

At the anode, oxidation takes place

Al(s) \longrightarrow Al^{3+} (aq) + 3e^-

At the cathode, reduction takes place

Cr^{3+} (aq) + 3e^- \longrightarrow Cr(s)

While writing cell notation, the anode is written on the left, and the cathode is written on the right

A single vertical line differentiates between the phases and a double vertical line represents the salt bridge.

Now, write the cell notation of the given Voltaic cell

Al(s) | Al³⁺(aq) || Cr³⁺ (aq) | Cr(s)

Learn more about Voltaic cells:

brainly.com/question/14312871

#SPJ4

7 0
2 years ago
If a “universal solvent” could dissolve anything, what problems might you imagine that would cause in everyday life?
algol13
People call water a 'universal solvent' because it is capable of dissolving more<span> substances than any other liquid. I think</span> it could<span> can be a major problem if every substance was readily soluble by water or any solvent. If so, it would mean that there is nothing that could contain water if it was not completely saturated with another solute. All in all, t</span><span>he idea of a universal solvent would be just impossible to imagine.</span>
3 0
3 years ago
What name is given to group II elements in the periodic table
lana66690 [7]

Answer:

alkaline earth metals

hope this helps

have a good day :)

Explanation:

6 0
3 years ago
Read 2 more answers
What happens when a catalyst is used in a chemical reaction? The reaction rate increases. The reaction rate decreases. The react
topjm [15]
Catalysts speed up a reaction so it would be the reaction rate increases.
8 0
3 years ago
Read 2 more answers
Which of the following shows the valency of 1?
Oliga [24]

\huge \bf༆ Answer ༄

The element having valency of 1 is ~

  • Sodium (Na)
6 0
2 years ago
Read 2 more answers
Other questions:
  • Help me on number 4 and that last one says blood pressure
    10·1 answer
  • Which of the following acids (listed with pKa values) and their conjugate base would form a buffer with a pH of 8.10?
    10·1 answer
  • Test Prep
    7·2 answers
  • Explain how the following changes would affect the rate of the reaction of 2-bromo-3-methylbutane with methanol: Part A The alky
    7·1 answer
  • After decaying for 48 hours, l/16 of the original mass of a radioisotope sample remains unchanged. What is the half-life of this
    9·1 answer
  • Find the relative equations from the table shown: (40 pts.)
    9·1 answer
  • Show the calculation of the final temperature for a 20.8 gram piece of iron heated to 100oC which has been added to a 55.3 gram
    14·1 answer
  • A gas at 45 o C occupies 5.22 L. At what temperature will the volume be 6.87 L?
    15·1 answer
  • What is the overall charge on the compound, sodium hydroxide? explain
    13·1 answer
  • Question 3 of 25
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!