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]
1 year ago
6

7. How many moles of mercury(ii) oxide, hgo, are needed to produce 12. 5 g of oxygen, o2? 2 hgo(s) --->2 hg(l) o2(g)

Chemistry
1 answer:
svetoff [14.1K]1 year ago
5 0

Moles are the division of the mass and the molar mass. The moles of mercury (ii) oxide in the decomposition reaction needed to produce oxygen are 0.781 moles.

<h3>What is a decomposition reaction?</h3>

A decomposition reaction is a breakdown of the reactant into simpler products. The decomposition of mercury (ii) oxide can be shown as:

2HgO(s) → 2Hg(l) + O₂(g)

From the reaction, it can be said that 2 moles of mercury (ii) oxide decomposes to produce 1 mole of oxygen.

The moles of oxygen that needs to be produced are calculated as:

Moles = mass ÷ molar mass

= 12.5 gm ÷ 32 gm/mol

= 0.39 moles

0.39 moles of oxygen are needed to be produced.

From the stoichiometric coefficient of the reaction, the moles of HgO is calculated as: 2 × 0.39 = 0.781 moles

Therefore, 0.781 moles of HgO are required in the reaction.

Learn more about moles here:

brainly.com/question/3801333

#SPJ4

You might be interested in
Which element would have the largest radius; Br or Se? Explain
dusya [7]
The atomic radium increases to the left and downwards on the periodic table. 
By that logic, Se has the largest radius.
5 0
2 years ago
What law states that the volume of a gas is proportional to the miles of the gas when pressure and temperature are kept constant
Rufina [12.5K]

ideal gas law. but you are talking about moles of gas not miles

5 0
2 years ago
Calculate the pH of a solution created by placing 2.0 grams of yttrium hydroxide, Y(OH)3, in 2.0 L of H2O. Ksp for Y(OH)3 is 6.0
oee [108]

Answer:

pH = 8.314

Explanation:

  • Y(OH)3(s) ↔ Y+  +  3OH-

equil:   S               S         3S

∴ Ksp = [ Y+ ] * [ OH- ]³ = 6.0 E-24

⇒ 6.0 E-24 = ( S )*( 3S )³

⇒ 6.0 E-24 = 27S∧4

⇒ 2.22 E-25 = S∧4

⇒ ( 2.22 E-25 )∧(1/4) = S

⇒ S = 6.866 E-7 M

⇒ [ OH- ] = 3*S =2.06 E-6 M

⇒ pOH = - Log [ OH- ]

⇒ pOH = - Log ( 2.06 E-6 )

⇒ pOH = 5.686

∴ pH = 14 - pOH

⇒ pH = 8.314

8 0
3 years ago
If a chemical change has taken place, which of these is most likely true? It's for science.
leonid [27]
Yes, it is most likely for science.
4 0
2 years ago
Read 2 more answers
________ is a measure of the amount of matter in an object.
Zepler [3.9K]
Mass i think hope and this helps u
6 0
3 years ago
Read 2 more answers
Other questions:
  • How did the lab activities help you answer the lesson question, "How are minerals and rocks classified?” What did you learn from
    13·2 answers
  • Do substrates bind the active site permanelty or temporally
    5·1 answer
  • When standardizing an iodine solution, 30.37 ml of the solution was required to completely oxidize 10.00 ml of a 5 mg/ml solutio
    11·1 answer
  • Which of these agreements has goals of peace and shared scientific research?
    15·2 answers
  • How many different flame colors were you able to detect? How many different elements must have been exposed to the flame to prod
    7·1 answer
  • What happens when buoyant mantle material gets near earths surface
    5·2 answers
  • Which statements would be expected to be true for Organesson? Select all that apply.
    11·1 answer
  • Which one help!<br> Chemistry
    6·1 answer
  • Which of the following is a true statement?
    13·1 answer
  • What are the tiny green structures that plants use to make their own food?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!