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
laila [671]
3 years ago
5

The molar mass of HgO is 216.59 g/mol. The molar mass of O2 is 32.00 g/mol. How many moles of HgO are needed to produce 250.0 g

of O2?
Chemistry
1 answer:
Irina-Kira [14]3 years ago
6 0
A reaction in which Oxygen (O₂) is produced from Mercury Oxide (HgO) would be a decomposition reaction.
           2HgO    →    2Hg    +    O₂

If 250g of O₂ is needed to be produced,
then the moles of oxygen needed to be produced = 250g  ÷  32 g/mol
                                                                                     = 7.8125 mol

Now, the mole ratio of Oxygen to Mercury Oxide is  1  :  2
∴ if the moles of oxygen =  7.8125 mol
then the moles of mercury oxide = 7.8125 mol × 2
                                                        = 15.625 mol


Thus the number moles of HgO needed to produce 250.0 g of O₂ is 15.625 mol
 
You might be interested in
How many neutrons and protons (nucleons) does an atom with
mezya [45]

Answer:

E

Explanation:

None of the above

The atom with the symbol S is called sulphur Sulphur has atomic number 16 which means that it has 16 protons. Sulphur-32 has 32 nucleons - 16 protons and 16 neutrons.Sulfur is a chemical element  It is  nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature.

4 0
3 years ago
how does an airplane’s kinetic energy and potential energy change as it takes off and lands? How does this energy change relate
mojhsa [17]

Answer: As the airplane goes higher, the mechanical energy is changed into gravitational potential energy. While flying, some energy is lost through drag to thermal (heat) energy and sound energy. Some is also lost as the plane makes the air around it move. ... As speed and height decrease, kinetic and potential energy decrease.

Explanation:

Hope this help

8 0
3 years ago
Apply<br> to stop the flow of blood from a cut.<br> bandages<br> pressure<br> cotton<br> ointment
aivan3 [116]
If it is a big open wound you apply pressure
6 0
3 years ago
How is a lithium atom (Li) different from a lithium ion (Li+)
Andrews [41]
A Lithium atom that has lost ONE Electron, is called a Lithium Ion (Li+).
3 0
3 years ago
1. Which of the following appears to cause the temperature of the atmosphere to rise?
Mila [183]

Answer:

C.

increasing level of carbon dioxide

7 0
2 years ago
Other questions:
  • The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is represented by the symbol shown below
    15·2 answers
  • Maria is researching a family of elements for her high school chemistry class. She is using her text book for information about
    14·1 answer
  • A 0.500-g sample of KCl is added to 50.0g of water in a calprimeter (Figure 5.12) If the temperature decreases by 1.05C. what is
    6·1 answer
  • Is the first part "kilo" from the word kilograms a suffix, prefix or unit???​
    10·2 answers
  • 7. A nonpolar covalent bond (i.e., pure covalent) would form in which one of the following pairs of atoms? A) Na Cl B) H Cl C) L
    12·1 answer
  • How many moles of water are produced from 13.35 mol of oxygen?
    12·1 answer
  • Becquerel expected to find (an)____when he developed the photographic plate that had Sun-exposed minerals on top of it. Becquere
    11·2 answers
  • 1. A 2-kg bowling ball sits on top of a building that is 40 meters tall. (5 pts) Circle one: KE / GPE / both ( can you show work
    14·1 answer
  • How many atoms do sodium have?
    9·1 answer
  • Question 10 of 10
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!