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
barxatty [35]
3 years ago
12

How many moles of carbon are in 7.87*10^7 carbon atoms

Chemistry
2 answers:
iris [78.8K]3 years ago
7 0

Answer:

1.31×10^-16moles

Explanation:

If 1 mole of carbon contains 6.02×10^23 carbon atoms (Avogadro's number)

X moles of carbon contain 7.87×10^7 carbon atoms

X = 7.87×10^7/6.02×10^23

X= 1.31×10^-16moles

Note that 1 moles of any substance contains Avogadro's number of elementary entities (atoms, ions, molecules etc)

bonufazy [111]3 years ago
6 0
There is 7 moles in C
You might be interested in
Determine the value of the equilibrium constant, Kgoal, for the reaction CO2(g)⇌C(s)+O2(g), Kgoal=? by making use of the followi
marta [7]

Answer : The value of K_{goal} for the final reaction is, 1.238\times 10^{-7}

Explanation :

The following equilibrium reactions are :

(1) 2CO_2(g)+2H_2O(l)\rightleftharpoons CH_3COOH(l)+2O_2 K_1=5.40\times 10^{-16}

(2) 2H_2(g)+O_2(g)\rightleftharpoons 2H_2O(l) K_2=1.06\times 10^{10}

(3) CH_3COOH(l)\rightleftharpoons 2C(s)+O_2(g) K_3=2.68\times 10^{-9}

The final equilibrium reaction is :

CO_2(g)\rightleftharpoons C(s)+O_2(g) K_{goal}=?

Now we have to calculate the value of K_{goal} for the final reaction.

First half the equation 1, 2 and 3 that means we are taking square root of equilibrium constant and then add all the equation 1, 2 and 3 that means we are multiplying all the equilibrium constant, we get the final equilibrium reaction and the expression of final equilibrium constant is:

K_{goal}=\sqrt{K_1\times K_2\times K_3}

Now put all the given values in this expression, we get :

K_{goal}=\sqrt{(5.40\times 10^{-16})\times (1.06\times 10^{10})\times (2.68\times 10^{-9})}

K_{goal}=1.238\times 10^{-7}

Therefore, the value of K_{goal} for the final reaction is, 1.238\times 10^{-7}

3 0
3 years ago
The boiling point of water is 1000C.
sergejj [24]

Answer:

a) The heat which we supply to water during boiling is used to overcome these forces of attraction between the particles so that they become totally free and change into a gas. This latent heat does not increase the kinetic energy of water particles and hence no rise in temperature takes place during the boiling of water.

b) Steam produces more severe burns than boiling water even though both are at 100oC because steam contains more heat, in the form of latent heat, than boiling water.

Explanation:

i hope this will help u

7 0
3 years ago
PLEASE HELP ME
ki77a [65]

Answer:

1.15 atm

Explanation:

According to Dalton's law of partial pressures, the total pressure is the sum of all the partial pressures of the gases present in the mixture.

Therefore we have:

Total pressure = partial pressure of carbon monoxide + partial pressure of oxygen + partial pressure of carbon dioxide

We were given the following:

Total pressure = 2.45 atm

Pressure of oxygen = 0.65 atm

Pressure of carbon monoxide = x

Pressure of carbon dioxide = 0.65 atm

Therefore:

2.45 = x + 0.65 + 0.65

2.45 = x + 1.3

x = 2.45 - 1.3

x = 1.15 atm

6 0
3 years ago
Which of the following best defines base isolation?(1 point)
jekas [21]

Base isolation is a method of earthquake resistant engineering where a structure is separated from the ground by isolation units that reduces the impact of seismic vibration energy. So, the last answer choice would be the best definition.  

3 0
3 years ago
Why do Hurricanes not form directly on the equator?
Gemiola [76]
They do form directly on the equators
8 0
3 years ago
Other questions:
  • Which substance can be described as cations bonded together by mobile electrons?A) Ag(s)
    8·1 answer
  • Which of the following is the correctly balanced equation for the reaction of a Ca(OH)2 and HNO3
    7·1 answer
  • the scientist found that 2 grams of hydrogen reacted completely with16 grams of oxygen what was the total mass of the water prod
    7·1 answer
  • The transfer of energy from objects with higher temperatures to objects with lower temperatures is defined as which of the follo
    5·1 answer
  • Which statement about sound waves is true?
    6·1 answer
  • Iron and vanadium both have the BCC crystal structure and V forms a substitutional solid solution for concentrations up to appro
    12·1 answer
  • ASAP HELP with this question!!!
    15·2 answers
  • Why do you think earthquakes and volcanoes occur in patterns?
    9·1 answer
  • Which phrase best describes the path of a light wave?
    8·2 answers
  • Iron has a density of 7.86g/cm^3. Could a block of metal with a mass of 18.2g and a volume of 2.56cm^3 be iron? Show work and ex
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!