Answer: c. At equilibrium, the concentration of reactants is greater than the products
Explanation:
Equilibrium constant for a reaction is the ratio of concentration of products to the concentration of reactants each raised to the power its stoichiometric coefficients.
For the reaction:
Equilibrium constant is given as:
![K_{eq}=\frac{[N_2O_5]}{[NO_2]\times [NO_3]}](https://tex.z-dn.net/?f=K_%7Beq%7D%3D%5Cfrac%7B%5BN_2O_5%5D%7D%7B%5BNO_2%5D%5Ctimes%20%5BNO_3%5D%7D)
![2.1\times 10^{-20}=\frac{[N_2O_5]}{[NO_2]\times [NO_3]}](https://tex.z-dn.net/?f=2.1%5Ctimes%2010%5E%7B-20%7D%3D%5Cfrac%7B%5BN_2O_5%5D%7D%7B%5BNO_2%5D%5Ctimes%20%5BNO_3%5D%7D)
When
a) K > 1, the concentration of products is greater than the concentration of reactants
b) K < 1, the concentration of reactants is greater than the concentration of products
c) K= 1, the reaction is at equilibrium, the concentration of reactants is equal to the concentration of products
Thus as 
is 
which is less than 1,
the concentration of reactants is greater than the concentration of products
Answer:
I think you can make 26, hope this helped.
Explanation:
Answer: 
, 0.533 L
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
According to avogadro's law, 1 mole of every substance occupies 22.4 L of volume at STP.
Number of moles =
moles of calcium carbonate = 
As 1 mole of calcium carbonate produces = 22.4 L of carbon dioxide at STP
Thus 0.0238 moles of calcium carbonate produces =
of carbon dioxide at STP
The lines are violet and blue respectively.
<h3>What is the energy?</h3>
We know that the energy of the photon could be obtained by the use of the equation;
E = hf
E = energy
h = Plank's constant
f = frequency
For the first line;
E = 6.6 * 10^-34 Js * 3.45 x 10^14 Hz = 2.3 * 10^-19 J
Given that;
E = hc/λ
λ = hc/E
λ = 6.6 * 10^-34 * 3 * 10^8/2.3 * 10^-19
λ = 8.61 * 10^-7 m or 861 nm
The color is violet
For the second line;
E = 6.6 * 10^-34 Js * 6.53 xx 10^14 Hz
E = 4.3 * 10^-19 J
E = hc/λ
λ = hc/E
λ = 6.6 * 10^-34 * 3 * 10^8/4.3 * 10^-19
λ = 4.60 * 10^- 7 m or 460 nm
The color is blue
Learn more about emission spectrum:brainly.com/question/13537021
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