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Slav-nsk [51]
3 years ago
7

How many moles of O2 is needed to form 2.19 moles of CO2 in the reaction

Chemistry
1 answer:
bagirrra123 [75]3 years ago
6 0
It is always half of what the o2 is
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Compounds A, B, and C react according to the following equation. 3A(g) + 2B(g) 2C(g) At 100°C a mixture of these gases at equili
Vedmedyk [2.9K]

Answer:

The value of Kc for the reaction is 3.24

Explanation:

A reversible chemical reaction, indicated by a double arrow, occurs in both directions: reagents transforming into products ( direct reaction) and products transforming back into reagents (inverse reaction)

Chemical Equilibrium is the state in which direct and indirect reactions have the same reaction rate. Then taking into account the rate constant of a direct reaction and its inverse the chemical constant Kc is defined.

Being:

aA + bB ⇔ cC + dD

where a, b, c and d are the stoichiometric coefficients, the equilibrium constant with the following equation:

Kc=\frac{[C]^{c} *[D]^{d} }{[A]^{a} *[B]^{b} }

Kc is equal to the multiplication of the concentrations of the products raised to their stoichiometric coefficients divided by the multiplication of the concentrations of the reagents also raised to their stoichiometric coefficients.

Then, in the reaction 3A(g) + 2B(g) ⇔ 2C(g),  the constant Kc is:

Kc=\frac{[C]^{2} }{[A]^{3} *[B]^{2} }

where:

  • [A]= 0.855 M
  • [B]= 1.23 M
  • [C]= 1.75 M

Replacing:

Kc=\frac{1.75^{2} }{0.855^{3}*1.23^{2}  }

Solving you get:

Kc=3.24

<u><em>The value of Kc for the reaction is 3.24</em></u>

8 0
3 years ago
What is the volume of a salt crystal measuring 5.44 x 10-2m by 2.5 x10-3m by 7.9 x 10-3 m?
vivado [14]
<span>V=width∗length∗height</span>
4 0
3 years ago
2
timofeeve [1]

Answer:

B. The Shell

Explanation:

The shell covers and surrounds whats inside. It protects it!

4 0
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15. Describe two physical and two chemical changes involved in cooking. (4 points)
Zigmanuir [339]

Answer:

Explanation:

Physical changes in cooking include the melting of solids, such as butter, and the boiling of liquids, such as water. Examples of physical changes would be the melting of fats and the boiling of water. Chemical changes involve the production of new substances.

8 0
3 years ago
Select the best answer.
madreJ [45]
Answer: All of these I’m pretty sure

Explanation: It just makes sense
8 0
2 years ago
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