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
qaws [65]
3 years ago
12

The reaction of sodium peroxide and water produces sodium hydroxide and oxygen gas. The following balanced chemical equation rep

resents the reaction.
2 Na^2O^2(s) + 2 H2O(l) → 4 NaOH(s) + O^2(g)

If 15.7 moles of sodium hydroxide are produced, how many moles of O2 will be made?
Chemistry
1 answer:
a_sh-v [17]3 years ago
8 0

Answer:

3.925 mol.

Explanation:

  • From the balanced equation:

<em>2 Na₂O₂(s) + 2 H₂O(l) → 4 NaOH(s) + O₂(g) ,</em>

It is clear that 2 moles of Na₂O₂ react with 2 moles of H₂O to produce 4 moles of NaOH and 1 mole of O₂ .

<em>Using cross multiplication:</em>

4 moles of NaOH produced with → 1 mole of O₂ .

15.7 moles of NaOH produced with → ??? mole of O₂ .

<em>∴ The no. of moles of O₂ made =</em> (1 mole)(15.7 mole)/(4 mole) =  <em>3.925 mol.</em>

You might be interested in
Where are electrons found in the atom?
icang [17]
B




Electrons are found in shells or orbitals that surround the nucleus of an atom
4 0
3 years ago
Read 2 more answers
Calculate the vapor pressure at 35ºC of a solution made by dissolving 20.2 g of sucrose (C12H22O11)in 60.5 g of water. The vapor
sukhopar [10]

Answer:

P' = 41.4 mmHg → Vapor pressure of solution

Explanation:

ΔP = P° . Xm

ΔP = Vapor pressure of pure solvent (P°) - Vapor pressure of solution (P')

Xm = Mole fraction for solute (Moles of solvent /Total moles)

Firstly we determine the mole fraction of solute.

Moles of solute → Mass . 1 mol / molar mass

20.2 g . 1 mol / 342 g = 0.0590 mol

Moles of solvent → Mass . 1mol / molar mass

60.5 g . 1 mol/ 18 g = 3.36 mol

Total moles = 3.36 mol + 0.0590 mol = 3.419 moles

Xm = 0.0590 mol / 3.419 moles → 0.0172

Let's replace the data in the formula

42.2 mmHg - P' = 42.2 mmHg . 0.0172

P' = - (42.2 mmHg . 0.0172 - 42.2 mmHg)

P' = 41.4 mmHg

5 0
3 years ago
Why is asexual reproduction simpler in prokaryotes?
Paha777 [63]

Answer:

In asexual reproduction, a single parent produces genetically identical offspring. As prokaryotes do not have a nucleus, and have only one circular chromosome, they do not need to reproduce by the same mechanism as eukaryotic cells; mitosis does not exist in prokaryotic cells.

Explanation:

8 0
3 years ago
Read 2 more answers
If 4.5 moles of AlCl3 were made, how many moles of CuCl2 were used?
Troyanec [42]

Answer:

6.75 moles of CuCl₂ were used

Explanation:

Given data:

Number of moles of AlCl₃ formed = 4.5 mol

Number of moles of CuCl₂ used = ?

Solution:

Chemical equation:

3CuCl₂ + 2Al  →   2AlCl₃ + 3Cu

Now we will compare the moles of CuCl₂ and AlCl₃

               AlCl₃       :      CuCl₂

                   2         :        3

                 4.5        :      3/2×4.5 = 6.75

6.75 moles of CuCl₂ were used.

7 0
2 years ago
How many moles is 135 L of ammonia gas at STP
FinnZ [79.3K]

Answer:

i

Explanation:

3 0
3 years ago
Other questions:
  • What is the formula of the compound formed between chlorine and calcium?
    11·1 answer
  • ANSWER FIRST GET BRAINLIEST
    8·2 answers
  • What are the intermolecular force​
    11·2 answers
  • Define Intermolecular forces
    15·2 answers
  • Fill in the blank
    9·1 answer
  • 2. Have someone hold the mirror for you, slowly move at least 3 m away from the it.
    8·1 answer
  • Which of the following elements are more reactive than the others.
    13·1 answer
  • In nature, Chlorine-35 isotopes (35 amu) make up 75
    8·1 answer
  • Ann drove to the store 10 km north of her house and then drove to the library, which is 5 km south of the store. She drove a tot
    8·1 answer
  • Physical science:verification on newton's second law
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!