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
Alina [70]
3 years ago
14

How many moles of mercury(II) oxide, HgO, are needed to pro- duce 125 g of oxygen, O2?

Chemistry
1 answer:
prisoha [69]3 years ago
6 0

Write out the balanced equation:

2HgO ----> 2Hg + O2

Convert grams of O2 to moles:

(125g of O2 * 1 mole)/ 32g of O2 = 3.91

Look at the ratio with HgO to O2:

2:1

Therefore:

3.91 * 2 = 7.82

You might be interested in
Please help :((
Blizzard [7]
Your answer would be 5.
4 0
2 years ago
Distinguish between atom molecules, and ions
NNADVOKAT [17]

Explanation:

Atoms are the smallest unit of matter that can't be broken down chemically. Molecules are groups of two or more atoms that are chemically bonded. Ions are atoms or molecules that have gained or lost one or more of their valence electrons and therefore have a net positive or negative charge.

7 0
3 years ago
2 Mg (s) + CO2 (g)  2 MgO (s) + C (s)
denis-greek [22]

Answer:

0.63g

Explanation:

5 0
3 years ago
What are the reasons global warming is caused my humans and animals. Plz help 100 points
pantera1 [17]
Global Warming has been increased by living organisms like animals and humans by many ways:

1) We burn fossil fuels, which is very bad for our Environment's health
2) Animals like cows & buffalo produces a lot of methane which causes Global Warming.
3) Animals cut a lot of trees for their products, so increase the amount of Carbon dioxide in the atmosphere, thus increases Global Warming.
4) We don't minimize our dependence on Non-renewable source of energy which 'causes a lot of pollution in the environment

Hope this helps!
8 0
3 years ago
Read 2 more answers
Joshua dissolved sugar in water to create a sugar solution. His friend Ray tells him it’s a compound, but Joshua corrects him. W
Lady_Fox [76]

the sugar disolved into the water so its a <u>mixture</u>. boom those words are it


5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the number of moles in 42 g of NaCl?
    5·2 answers
  • James decides to walk home from school today. He lives 3 miles from school and can walk home in 45 minutes. At what rate is Jame
    10·1 answer
  • Write the symbol of another isotope of lead with 132 neutrons.
    9·1 answer
  • Identify each process numbered 1-6
    7·1 answer
  • What type of spectrum is produced when electromagnetic radiation is emitted or absorbed as electrons change energy levels in an
    6·2 answers
  • At equilibrium, Keq for the following reaction is equal to 3.5: SO2 + NO20 È SO3 + NO a) Is a beaker containing 2.5 M SO2, 2.0 M
    7·1 answer
  • List 3 properties of the hair’s cuticle.
    11·1 answer
  • Which of the following elements has the lowest first ionizition energy ?
    7·2 answers
  • What is the hydrogen ion concentration of a solution with ph = 2. 25?.
    6·1 answer
  • Can you show me how these are done ? show all work pleaseItem D
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!