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
natta225 [31]
3 years ago
13

How many moles of aluminum oxide (Al2O3) can be produced from 12.8 moles of oxygen gas (02)

Chemistry
1 answer:
zhannawk [14.2K]3 years ago
4 0

Answer:

Theoretical Yield

Percent yield

Example stoichiometry problem

How much oxygen can be prepared from 12.25 g KClO3 . (Use molar mass KClO3 = 122.5 g.)

Most stoichiometry problems can be solved using the following steps.

Step 1.

Write and balance the equation for the decomposition of KClO3 with heat (∆). 2KClO3 + ∆ → 2KCl + 3O2

Step 2.

Convert what you have (in this case g KClO3) to moles.

# moles = grams/molar mass = 12.25 g /122.5 = 0.100 mole KClO3.

Step 3.

Using the coefficients in the balanced equation, convert moles of what you have (moles KClO3) to moles of what you want (in this case moles oxygen).

0.100 mol KClO3 x (3 moles O2/2 moles KClO3) = 0.100 x (3/2) = 0.150 mole O2.

Step 4.

Convert moles from step 3 to grams.

moles x molar mass = grams

0.150 mole O2 x (32.0 g O2/mole O2) = 4.80 g O2 produced from 12.25 g KClO3. This is the theoretical yield. If the ACTUAL yield is 4.20 grams, calculate percent yield. Percent yield = (actual yield/theoretical yield) x 100 = (4.20/4.80) x 100 = 87.5% yield

NOTE: In step 1, moles can be obtained other ways; in step 4 moles can be converted to other units.

a. For solutions, M x L = moles (or mL x M = millimoles).

b. For gases, L/22.4 = moles

You might be interested in
A container can hold 65g of water. circle the conversion factor needed to find the mass of water that 5 identical containers can
dezoksy [38]
Than you for posting your question here. I hope the answer helps. 

The answer as to be grams (g) since you it is aske for mass. What you have for units is 1/g. 

<span>Very close. The factor is 5. </span>
<span>answer is 5 * 65 g of water.</span>
5 0
3 years ago
The volume of a gas with an initial pressure of 380 mmHg increases from 5.0 L to 8.0 L. What is the final pressure of the gas, i
Phoenix [80]
It’s C. 0.31 atm

I hope this helped out! Have a nice day :)
6 0
3 years ago
[Please see the attatched photo]​
mixer [17]

Answer:

Its C

Explanation:

Got 100% on test edge 2020

5 0
2 years ago
Read 2 more answers
Do x-rays travel slower than infrared
OleMash [197]
No, x-rays do not travel slower than infrared radiation or even the opposite. Both are travelling in vacuum therefore they travel at same speed. They differ in the frequency of the electromagnetic waves.
3 0
3 years ago
Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation: 4NH3 + 5O2 → 4NO + 6H2O Wh
tamaranim1 [39]

Answer:

16.16g of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4NH3 + 5O2 → 4NO + 6H2O

Next, we shall determine the mass of NH3 and O2 that reacted from the balanced equation. This is illustrated below:

Molar mass of NH3 = 14 + (3x1) = 17g/mol

Mass of NH3 from the balanced equation = 4 x 17 = 68g

Molar Mass of O2 = 16x2 = 32g/mol

Mass of O2 from the balanced equation = 5 x 32 = 160g.

From the balanced equation above,

68g of NH3 reacted with 160g of O2.

Now, we can calculate the mass of O2 that will be required to react completely with 6.87 g of NH3. This is illustrated below:

From the balanced equation above,

68g of NH3 reacted with 160g of O2

Therefore, 6.87g of NH3 will react with = (6.87 x 160)/68 = 16.16g of O2.

Therefore, 16.16g of O2 is needed for the reaction.

4 0
3 years ago
Other questions:
  • Chocolate candy melting in your hand is what type of heat transfer
    14·1 answer
  • A thermos bottle (Dewar vessel) has an evacuated space between its inner and outer walls to diminish the rate of transfer of the
    15·1 answer
  • ¿la densidad de una solución es mayor o menor al agregar agua?
    7·1 answer
  • Which of the following metabolic processes can occur without a net influx of energy from some other process?
    7·1 answer
  • Write the nuclear equation to describe the alpha decay of 243 95 Am
    8·2 answers
  • Rust forming on a piece of iron is an example of which of the following? *
    13·1 answer
  • ____________ are traits characteristics or features of an organism that are passed from parent to offspring
    7·1 answer
  • Solvent: Will give brainliest
    10·2 answers
  • Which of the following is not a trend that varies systematically in the periodic table
    13·2 answers
  • A 30:70 (mole %) ratio of acetone:water is heated to 54.36 ∘C at 760 mmHg. What is the total vapor pressure of the system? The v
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!