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Arlecino [84]
2 years ago
12

Cho một thực phẩm có độ ẩm tương đối là 81%, hỏi hoạt độ của nước của thực phẩm đó là bao nhiêu?

Chemistry
1 answer:
spayn [35]2 years ago
6 0

Explanation:

Given a food with a relative humidity of 81%, what is the water activity of that food?

The water activity of a food can be determined by using the formula:

water activity=relative humidity of food / 100

water activity of a food=\frac{relative humidity of food }{100} \\=81/100\\=0.81

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The formation of iodine is described by the following chemical equation:
olga nikolaevna [1]

Answer:

N2O2(g) +O2(g) ===> 2NO2(g)

Explanation:

For a nonelementary reaction, the reaction equation is described as the sum of all the steps involved. All these steps constitute the reaction mechanism. Each step in the mechanism is an elementary reaction. The rate law of the overall reaction involves the rate determining step (slowest step) in the reaction sequence.

Now look at the overall reaction 2NO(g) + O2(g) ---------> 2NO2(g)

The two steps in the mechanism are

2NO(g) --------->N2O2(g) (fast)

N2O2(g) +O2(g) -------> 2NO2(g) (slow)

Summing all the steps and cancelling out the intermediate N2O2(g), we obtain the reaction equation;

2NO(g) + O2(g) ---------> 2NO2(g)

Hence the answer.

7 0
2 years ago
How does an increase in reactant concentration affect the rate of reaction?
Leto [7]

Answer:

increase the rate of reaction.

Explanation:

7 0
2 years ago
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vampirchik [111]
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4 0
3 years ago
Elements within the same group of the periodic table behave similarly because they have the same number of ?
sammy [17]
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4 0
2 years ago
If you made 6 moles of NO2 How many grams of N2 did you use N2+2O2&gt; 2NO2​
denis23 [38]

Answer: 1:2

Explanation:

Believe me its correct.

7 0
2 years ago
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