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
vesna_86 [32]
3 years ago
7

CaCO3---> CaO+CO2 How many moles of CaO form when 98.60g CaCO3 decompose? 98.60g CaCO3= ______ mol CaO

Chemistry
2 answers:
kramer3 years ago
7 0

Answer:

0.9852 moles of CaO

Explanation:

Reaction equation for the decomposition of CaCO₃:

CaCO₃ → CaO + CO₂

The question asks <em>how many moles of CaO form when 98.60g of CaCO₃ decompose.</em>

We can see from the reaction equation that for every mol of CaCO₃, one mol of CaO will be produced (molar ratio 1:1)

_____________________________________________________

So first we need to<u> calculate how many moles are the 98.60g of CaCO₃</u>:

Molar Mass of CaCO₃ = molar mass Ca + molar mass C + 3 * molar mass O

                                     = 40.078 + 12.011 + 3 * 15.999 = 100.086 g/mol

Moles of CaCO₃ = mass CaCO₃ / molar mass CaCO₃

Moles of CaCO₃ = 98.60 g / 100.086 g/mol = 0.9852 moles CaCO₃

________________________________________________________

As we said before <em>for every mol of CaCO₃, one mol of CaO is produced.</em>

So the decomposition of 0.9852 moles of CaCO₃ will produce 0.9852 moles of CaO.

Sav [38]3 years ago
3 0

Hey I think it is going to be 0986 moles. Cuz we can see that no. of moles of CaCO3 which will decompose is equivalent to the no. of CaO . Now it's just the matter of finding the no. of moles of CaCO3 .

<span>no.of moles=<span><span>mass /</span><span>relative molecular mass</span></span></span>

You might be interested in
Classify methanal according to the position of the c=o group
seraphim [82]

Answer :  Methanal also known as Formaldehyde CH_{2}O is a chemical Aldehyde which contain ( -CHO) group.

Explanation :

In organic chemistry, a carbonyl group is a functional group which contain a carbon atom double-bonded to an oxygen atom i.e, ( C=O).

     If carbonyl group is present in a compound then it can be a carboxylic (RCOOH), aldehyde (RCHO), ketone (RCOR'), ester ((RCOOR') or amide (RCONR'R") group.

Here are some functional groups naming according to the<em> IUPAC</em> rules and image also attached,

Carboxylic acid   →    (RCOOH)    →    ( name end in 'OIC ACID' )

Aldehyde             →    (RCOH)       →    ( name end in 'AL' )

Ketone                 →    (RCOR')       →    ( name end in 'ONE' )

Ester                     →    (RCOOR')    →    ( name end in 'ATE' )

Amide                   →    (RCONR'R") →    ( name end in 'AMIDE' )

In an aldehyde, atleast one hydrogen atom must be attached to the carbonyl carbon. For an aldehyde, remove ( -e) from alkane name and add ( -al) at the end of the compound.

Methanal is the IUPAC name for Formaldehyde.


3 0
3 years ago
If a snail crawls at 0.013 m/s north, how far will it travel in 60 seconds? Find time.
inessss [21]
It will have traveled 0.78 m. You find this by multiplying .013 by 60
8 0
3 years ago
Read 2 more answers
Breve resumen de que es volumen
andrey2020 [161]
What??? what language is this?
4 0
2 years ago
Um Test
vitfil [10]

Suspensions

Explanation:

Suspensions are heterogeneous mixtures that contains large particles that can settle out or be filtered.

  • Suspensions are mixtures of small insoluble particles of a solid in a liquid or gas.
  • Examples are:
  1.  powdered chalk in water
  2. muddy water
  3. harmattan

The particles in suspension can settle on standing

Learn more:

Suspension brainly.com/question/1557970

heterogeneous mixture brainly.com/question/1446244

#learnwithBrainly

8 0
2 years ago
2. What is the concentration of hydrochloric acid?
nika2105 [10]
<h2><em><u>Answer</u></em><em><u> </u></em><em><u>:</u></em><em><u>-</u></em></h2><h3><em><u>Hydrochloric</u></em><em><u> </u></em><em><u>acid</u></em><em><u> </u></em><em><u>(</u></em><em><u>HCI</u></em><em><u>)</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>supplied</u></em><em><u> </u></em><em><u>commerically</u></em><em><u> </u></em><em><u>at</u></em><em><u> </u></em><em><u>concentrations</u></em><em><u> </u></em><em><u>mainly</u></em><em><u> </u></em><em><u>within</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>range</u></em><em><u> </u></em><em><u>2</u></em><em><u>8</u></em><em><u>-</u></em><em><u>3</u></em><em><u>6</u></em><em><u>%</u></em><em><u> </u></em><em><u>w</u></em><em><u>/</u></em><em><u>w</u></em><em><u>.</u></em></h3>

<h2><em><u>Please</u></em><em><u> </u></em><em><u>mark</u></em><em><u> </u></em><em><u>may</u></em><em><u> </u></em><em><u>be</u></em><em><u> </u></em><em><u>brainliest</u></em><em><u> </u></em><em><u>answer</u></em><em><u>.</u></em><em><u> </u></em></h2>

3 0
1 year ago
Other questions:
  • What’s the temperature of a liquid that turns into a gas at 135 degrees Celsius
    10·1 answer
  • What are the four states of matter and explain them
    14·1 answer
  • Consider the hydrogen atom as described by the Bohr model. The nucleus of the hydrogen atom is a single proton. The electron rot
    6·1 answer
  • WHERE DOES THE REST OF THE ENERGY (90%) GO?​
    9·1 answer
  • Relative dating will tell you exactly how old a rock layer is.<br> True<br> False
    7·1 answer
  • Mole fraction of the solute in a 1.00. What is the molal aqueous eqaution?
    10·1 answer
  • WILL GIVE BRAINLESS IF ALL ANSWER ARE CORRECT
    7·1 answer
  • List out fifteen ways of how you use water in your everyday life
    14·1 answer
  • Which wind belt do we live in<br>​
    10·2 answers
  • Compound A has 4 moles of hydrogen, 4 moles of oxygen, and
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!