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
grigory [225]
1 year ago
9

Need help FAST! Will rate 5

Chemistry
1 answer:
evablogger [386]1 year ago
4 0

If 28.4 g of HgO decomposes and produces 2.0 g of oxygen, then 26 grams of Hg is produced.

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

Decomposition reactions occur when complex chemical entities split apart into smaller components. Decomposition reactions often demand energy input.

There are three different kinds of breakdown reactions: thermal, photolytic, and electrolytic.

Mass_{reactant = Mass_{product}

Mass_{mercury oxide = Mass_{mercury} + mass_{oxygen}

28g =        mass_{mercury} + 2g

   mass_{mercury} = 26g

Thus, 28.4 g of HgO decomposes and produces 2.0 g of oxygen, then 26 grams of Hg is produced.

percentage mass_{mercury} = \frac{mass_{mercury}}{mass_{mercury}oxide}  X 100%

= 26g/28g

= 93%

thus  93% is the percent by mass of Hg present in HgO.

To learn more about Decomposition reaction, refer to the below link:

brainly.com/question/14112196

# SPJ1

You might be interested in
Which scientist is known as the father of chemistry *?
noname [10]
The correct answer is <span>Antoine-Laurent de Lavoisier. Hope this helps!</span>
3 0
2 years ago
The AP Biology teacher is measuring out 638.0 g of dextrose (C6H12O6) for a lab. How many moles of dextrose is this equivalent t
Katena32 [7]

The AP Biology teacher is measuring out 638.0 g of dextrose (C6H12O6) for a lab the moles of dextrose is this equivalent to is 3.6888 moles.

<h3>What are moles?</h3>

A mole is described as 6.02214076 × 1023 of a few chemical unit, be it atoms, molecules, ions, or others. The mole is a handy unit to apply due to the tremendous variety of atoms, molecules, or others in any substance.

To calculate molar equivalents for every reagent, divide the moles of that reagent through the moles of the restricting reagent. The calculation is follows:

  • 655/12 x 6 + 12+ 16 x 6
  • = 655/ 180 = 3.6888 moles.

Read more about moles:

brainly.com/question/24322641

#SPJ1

6 0
1 year ago
Why are the molecules of hydrogen chloride gas (hcl) more tightly bound to each other than molecules of oxygen gas (o2)?
Oduvanchick [21]
Answer : If we consider the molecule of oxygen gas which in diatomic state, is bonded to other atom which is of same element this is called as homonuclear.

While in HCl there is a heteronuclear bonding observed because there are two different elements getting involved in the bond formation, also  it creates a electrovalent species in itself and makes it more polar. They are creating a dipole moment by separating different charges in the molecule which cause it to get tightly bonded with each other.
4 0
3 years ago
How many moles of H2O are in 42.0 g H2O?
cricket20 [7]
(42/18.02)=2.3307mol H2O
5 0
3 years ago
Read 2 more answers
What do you call A compound composed of two oppositely charged elements?
stepan [7]

Answer: Ionic Bond

Explanation: The electrostatic attraction that binds oppositely charged ions together. alloy. a mixture composed of two or more elements, at least one of which is a metal.

Hope this helped!

5 0
3 years ago
Read 2 more answers
Other questions:
  • Include a map with points where neon can be found.
    15·1 answer
  • 49 grams of sulfuric acid, H2SO4, is dissolved in 1 liter of solution. Determine the molarity (M).
    14·1 answer
  • Which of the following is an example of representative money?
    8·1 answer
  • Which pair of molecules is not a polar bond?<br> OA. N-O<br> OO<br> B. C-O<br> C.O-H<br> OD. 0-0
    10·1 answer
  • WILL MARK BRAINLIEST please
    8·1 answer
  • Write the equilibrium constant expression, Kc, for the following reaction: If either the numerator or denominator is 1, please e
    15·1 answer
  • What is the definition of bond (in chemistry) ?
    5·2 answers
  • 8. Why do we see water droplets on the outer surface of a glass containing ice cold water?
    14·2 answers
  • How many moles are in 5.4x1024 molecules of C4H2F7I, heptafluoro-1-iodobutane? Group of answer choices
    11·1 answer
  • Which of the following is the correct measurement for the volume of liquid shown below?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!