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stepan [7]
2 years ago
5

If you have 1kg of carbon and 1 kg of gold, they will weigh the same.

Chemistry
1 answer:
Mekhanik [1.2K]2 years ago
8 0
This would be be true
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Suppose that the gas-phase reactions A→B and B→A are both elementary processes with rate constants of 4.7×10−3s−1 and 5.8×10−1s−
uranmaximum [27]

Answer:

K = 8.1 x 10⁻³

Explanation:

We are told here that these gas phase reactions are both elementary processes, thus the reactions forward and reverse are both first order:

A→B        Rate(forward) = k(forward) x [A]

and for

B→A       Rate(reverse) = k(reverse) x [B]

At equilibrium we know the rates of the forward and reverse reaction are equal, so

k(forward) x [A]  = k(reverse) x [B]    for A(g)⇌B(g)

⇒  k(forward) / k(reverse)  =  [B] / [A] =  K

4.7 x 10⁻³  s⁻1 / 5.8 x 10⁻¹ s⁻¹ = 8.1 x 10⁻³ = K

Notice how this answer is logical : the rate of the reverse reaction is greater than the forward reaction ( a factor of approximately 120 times) , and will be expecting a number for the equilibrium constant, K, smaller than one where the reactant concentration, [A], will prevail.

It is worth to mention that this is only valid for reactions which are single, elementary processes and not true for other equilibria.

8 0
3 years ago
Which of the following is a way that crystals can form in nature
Leona [35]
I only knwi one way which is if water evaporates from a mixture
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Ahhh helpppp:))))))))))
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2 years ago
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A 2.0-liter aqueous solution contains a total of 3.0 moles of dissolved NH4Cl at 25°C and standard pressure.
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The molarity is a concentration unit which defined as the number of moles of solute divided by the number of liters of solution. So the molarity of the solution is 3/2=1.5 mol/L.
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