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Korvikt [17]
4 years ago
9

The annual production of HNO3 in 2013 was 60 million metric tons Most of that was prepared by the following sequence of reaction

s, each run in a separate reaction vessel. (a) (b) (c) The first reaction is run by burning ammonia in air over a platinum catalyst. This reaction is fast. The reaction in equation (c) is also fast. The second reaction limits the rate at which nitric acid can be prepared from ammonia. If equation (b) is second order in NO and first order in O2, what is the rate of formation of NO2 when the oxygen concentration is 0.50 M and the nitric oxide concentration is 0.75 M? The rate constant for the reaction is 5.8 × 10−6 L2/mol2/s.
Chemistry
1 answer:
Finger [1]4 years ago
6 0

Answer:

1.6\times 10^{-6} M/s is the rate of formation of nitrogen dioxide.

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

2NO+O_2\rightarrow 2NO_2

Given: Order with respect to O_2 = 1

Order with respect to NO = 2

Thus rate law is:

R=k[NO]^2[O_2]^1

k= rate constant

R=k[NO]^2[O_2]^1

=5.8\times 10^{-6} s/L^2/mol ^2\times (0.75 M)^2\times ( 0.50 M)^1

R = 1.6\times 10^{-6} M/s

1.6\times 10^{-6} M/s is the rate of formation of nitrogen dioxide.

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In order to gain one pound of body weight, the average person must consume 3500 more calories
Fed [463]

Answer:

<em>17500 calories</em> of chocolate bars are needed to eat to gain 5 pounds.

Explanation:

We can use ratios to calculate the answer using the information given in the question.

1 pound : 3500 grams

5 pounds : x grams

As it is given that the individual is burning no calories, we do not have to factor in any additional numbers.

<u><em>Method</em><em> </em><em>A</em><em>:</em></u>

To go from 1 in the first ratio to 5 in the second ratio, they multipled 1 by 5. Hence, to go from 3500 in the first ratio to x in the second ratio, we must multiply by 5.

x = 3500 × 5

x = 17500

<em><u>Method B</u>:</em>

To solve for the answer x, we can convert the ratios into fractions.

1 / 5 = 3500 / x

3500 / x = 1 / 5

To make x the subject, multiply the denominator of the left fraction with the numerator of the right fraction and place it on the left side. Then multiply the numerator of the left fraction with the denominator of the right fraction and place it on the right side.

x = 5 × 3500

x = 17500

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4 years ago
Which of the following is an irreversible physical change?
Yuliya22 [10]

Answer:

b) sharpening a pencil

Explanation:

If you melt lead, boil water, or dissolve sugar in water, you can return all of them back to their original state. If you sharpen a pencil, you can't reattach the shavings as they were originally.

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A geologist is studying the shore along a river. She finds a pile of rocks at the base of a riverbank. These broken rock pieces
Dmitry_Shevchenko [17]

The scientist who studies the earth constituent like solids, gas and liquid is called a geologist. Weathering and erosion are the correct blanks.

<h3>What are weathering and erosion?</h3>

The process of the deterioration of any solid particles like minerals, soils and rocks is called weathering. It occurs due to biochemical substances, atmospheric gases and water pressure.

The process of the transportation of the rocks and mineral particles away from their original position is called erosion it is due to forceful air and water.

The rocks moved from their original place to some another due to weathering and this process of their transportation is called erosion.

Therefore, <u>weathering </u>and <u>erosion </u>are the correct blanks.

Learn more about weathering and erosion here:

brainly.com/question/11712593

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a carbohydrate is called an organic compound because it contains a) phosphorus b) carbon c) hydrogen d) oxygen
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Organic chemistry is all about CARBON!!!!!!
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\bf \LARGE\rightarrow{Very  \: reactive}

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