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
Damm [24]
3 years ago
14

The number of oxygen atoms (O) in 0.24g of calcium carbonate CaCO3

Chemistry
1 answer:
Sveta_85 [38]3 years ago
8 0

Answer:

0.036  × 10²³ oxygen atoms

Explanation:

Given data:

Mass of compound = 0.24 g

Number of oxygen atoms = ?

Solution:

First of all we will calculate the number of moles of compound.

number of moles = mass/ molar mass

Number of moles = 0.24 g/ 100.1 g/mol

Number of moles = 0.002 mol

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole of CaCO₃ contain 3 moles of oxygen atom.

0.002 mol × 3 = 0.006 moles of oxygen atoms.

Number of oxygen atoms:

1 mole = 6.022 × 10²³ number of oxygen atoms

0.006 mol ×  6.022 × 10²³ f oxygen atoms / 1 mol

0.036  × 10²³ oxygen atoms

You might be interested in
WHat are the 7 parts of the water cycle
LiRa [457]
The 7 parts of the water cycle would be precipitation runoff evaporation condensation than precipitation again and runoff again 3>
3 0
3 years ago
Born and Meyer developed a quantitative theory of bonding in ionic crystals in which the potential energy of the system is given
blsea [12.9K]

Answer:

E = NA/R^n - N alpha e^2/ (4 piEoR')

Explanation:

Where N = number of positive ion pairs

e= magnitude

R= interatomic distance

n = the Born exponent

6 0
2 years ago
Read 2 more answers
An electrolyte can be checked to ensure that it has correct chemical composition by measuring its _____.
UNO [17]

Answer:

specific gravity

Explanation:

3 0
2 years ago
How many grams of carbon should be burned in an excess of oxygen at stp to obtain 2. 21 l of carbon dioxide?.
snow_tiger [21]
You must burn 1.17 g C to obtain 2.21 L CO2 at
STP.
The balanced chemical equation is
C+02+ CO2.
Step 1. Convert litres of CO, to moles of CO2.
STP is 0 °C and 1 bar. At STP the volume of 1 mol
of an ideal gas is 22.71 L.
Moles of CO2= 2.21 L CO2 × (1 mol CO2/22.71 L
CO2) = 0.097 31 mol CO2
Step 2. Use the molar ratio of C:CO2 to convert
moles of CO to moles of C
Moles of C= 0.097 31mol CO2 × (1 mol C/1 mol
CO2) = 0.097 31mol C
Step 3. Use the molar mass of C to calculate the
mass of C
Mass of C= 0.097 31mol C × (12.01 g C/1 mol C) =
1.17 g C
It looks as if you are using the old (pre-1982)
definition of STP. That definition gives a value of
1.18 g C.
4 0
2 years ago
ph ch3 h2nnh koh The Wolff-Kishner reaction involves the reaction of an aldehyde/ketone with hydrazine in the presence of KOH. T
Tatiana [17]

Hope this was helpful!

6 0
3 years ago
Other questions:
  • Combustion of glucose (C6H12O6) is the main source of energy for animal cells: C6H12O6(s)+ 6O2(g)→ 6CO2(g)+ 6H2O(l) =ΔGrxn37°C−2
    6·1 answer
  • What is the nuclear binding energy of an atom that has a mass defect of 1.643 x 10-28kg?
    14·2 answers
  • a photon has an energy of 1.10 x 10_-13 J. What is the photon's wavelenght? What type of electromagnetic radiation is it?
    9·1 answer
  • 4. DNA replication:
    5·2 answers
  • Can dowels be chopsticks, since both of them are wood?
    8·2 answers
  • Based on VSEPR theory and your observations from the Molecular Geometry lab consider the following questions What is the predict
    11·1 answer
  • G) The set of quantum numbers for the 6th electron in fluorine atom. ​
    13·1 answer
  • Help out this a quick one
    13·1 answer
  • The balanced net ionic equation for precipitation of CaCO3 when aqueous solutions of Li2CO3 and CaCl2 are mixed is
    13·1 answer
  • One quarter of chlorine is chlorine-37 and the rest is Chlorine-35. Calculate the average mass of chlorine
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!