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Advocard [28]
3 years ago
7

The reason radioactive isotopes can be followed through the steps of a chemical reaction or industrial process is that they

Chemistry
1 answer:
AnnyKZ [126]3 years ago
5 0
I think the correct answer from the choices listed above is option C. The reason radioactive isotopes can be followed through the steps of a chemical reaction or industrial process is that they do not react chemically as nonradioactive isotopes do. Hope this answers the question.
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The following diagrams represent mixtures of NO(g) and O2(g). These two substances react as follows: 2NO(g)+O2(g)→2NO2(g) It has
Alja [10]

This is an incomplete question, here is a complete question and an image is attached below.

The following diagrams represent mixtures of NO(g) and O₂(g). These two substances react as follows:

2NO(g)+O_2(g)\rightarrow 2NO_2(g)

It has been determined experimentally that the rate is second order in NO and first order in O₂.

Based on this fact, which of the following mixtures will have the fastest initial rate?

The mixture (1). The mixture (2). The mixture (3).

Answer : The mixture 1 has the fastest initial rate.

Explanation :

The given chemical reaction is:

2NO(g)+O_2(g)\rightarrow 2NO_2(g)

The rate law expression is:

Rate=k[NO]^2[O_2]

Now we have to determine the number of molecules of NO\text{ and }O_2

In mixture 1 : There are 5 NO and 4 O_2 molecules.

In mixture 2 : There are 7 NO and 2 O_2 molecules.

In mixture 3 : There are 3 NO and 5 O_2 molecules.

Now we have to determine the rate law expression for mixture 1, 2 and 3.

The rate law expression for mixture 1 is:

Rate=k[NO]^2[O_2]

Rate=k(5)^2\times (4)

Rate=k(100)

The rate law expression for mixture 2 is:

Rate=k[NO]^2[O_2]

Rate=k(7)^2\times (2)

Rate=k(98)

The rate law expression for mixture 3 is:

Rate=k[NO]^2[O_2]

Rate=k(3)^2\times (5)

Rate=k(45)

Hence, the mixture 1 has the fastest initial rate.

4 0
2 years ago
How do water molecules move away from their H-O-H configuration to become new molecules?
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<u />

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3 years ago
2. Which of the following is NOT a function of the saliva?
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Explanation:

c . produces bile is not the function of slaiva

6 0
2 years ago
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Help people i really need this
denis-greek [22]
Option “A” is the crest of the wave because it’s the maximum value of upward displacement within a cycle.
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