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lianna [129]
4 years ago
14

I got the correct answer, but I don't know why. Could someone explain this to me?

Chemistry
1 answer:
MakcuM [25]4 years ago
3 0

Answer:-

Option 2

Explanation:-

In a multi step reaction, the overall reaction is as fast as the slowest step only.

So the rate of a multistep reaction is the same as the rate of its slowest step.

The gas phase reaction was found to be second order wrt NO2.

So the slowest step must have 2 NO2 since the dependence is second order on NO2.

It was also found to be zero order wrt CO.

So the slowest step must not contain any CO since it’s presence has no effect on the reaction (zero order).

Among all options, only number 2 meets the two criterion

Thus the steps are

NO2 + NO2 – NO3 + NO (Slow)

NO3 + CO – NO2 + CO2 (Fast)

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Alex17521 [72]

Answer:

Insight

Explanation:

Insight is the understanding of a specific cause and effect within a specific context. The term insight can have several related meanings:

  • a piece of information
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An insight that manifests itself suddenly, such as understanding how to solve a difficult problem, is sometimes called by the German word Aha-Erlebnis. The term was coined by the German psychologist and theoretical linguist Karl Bühler. It is also known as an epiphany, eureka moment or (for cross word solvers) the penny dropping moment (PDM). Sudden sickening realizations identifying a problem rather than solving it, so Uh-oh rather than Aha moments are further seen in negative insight. A further example of negative insight is chagrin which is annoyance at the obviousness of a solution missed up until the point of insight.

6 0
3 years ago
Gastric juice in the stomach contains pepsin and sulfuric acid.<br><br><br> TrueFalse
jonny [76]
False, pepsin and hydrochloric acid
5 0
3 years ago
Molecules are likely to dissolve in nonpolar solvents.
masha68 [24]
The answer to this is yes they are likely, true.
4 0
3 years ago
An ionic compound has a slightly negative heat of solution in water. would you expect it to be soluble or insoluble in water?
Grace [21]
The ionic compound will be soluble in water. 
The value of the heat of solution of a substance is one of the factors that determine whether a substance will dissolve or not. A negative heat of solution signifies that the reaction will be spontaneous, so the ionic compound will dissolve in water.
3 0
3 years ago
A 5 mL sample of an unknown liquid is placed into a 250 mL flask that has had all of the air removed. The pressure measured in t
Brrunno [24]

Answer:

See explanation below

Explanation:

In this case, we can use the Boyle's law. Assuming that the temperature of both trial remains constant, then:

P₁V₁ = P₂V₂    (1)

You should note that this expression is usable when you are dealing with gases. However, we can treat this unknown liquid as a gas, because all the air on the flask is removed, and we can assume that the liquid can behave like an ideal gas.

So using the above expression, we can solve for P₂:

P₂ = P₁V₁ / V₂    (2)

In this case, we already have the values of presures and volume, so replacing in this expression:

P₂ = 34.5 * 5 / 214

<h2>P₂ = 0.806 kPa</h2>

This should be the pressure of the liquid.

Hope this helps

8 0
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