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alisha [4.7K]
3 years ago
13

Arrange elements in decreasing order of the number of valence electrons

Chemistry
1 answer:
meriva3 years ago
3 0

Answer:

It’s voice and a

Explanation:

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2. Consider the reaction 2NO(g) + O2(g) → 2NO2(g) Suppose that at a particular moment during the reaction nitric oxide (NO) is r
vredina [299]

Answer :

(a) The rate of NO_2 formed is, 0.066 M/s

(b) The rate of O_2 formed is, 0.033 M/s

Explanation : Given,

\frac{d[NO]}{dt} = 0.066 M/s

The balanced chemical reaction is,

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

The rate of disappearance of NO = -\frac{1}{2}\frac{d[NO]}{dt}

The rate of disappearance of O_2 = -\frac{d[O_2]}{dt}

The rate of formation of NO_2 = \frac{1}{2}\frac{d[NO_2]}{dt}

As we know that,

\frac{d[NO]}{dt} = 0.066 M/s

(a) Now we have to determine the rate of NO_2 formed.

\frac{1}{2}\frac{d[NO_2]}{dt}=\frac{1}{2}\frac{d[NO]}{dt}

\frac{d[NO_2]}{dt}=\frac{d[NO]}{dt}=0.066M/s

The rate of NO_2 formed is, 0.066 M/s

(b) Now we have to determine the rate of molecular oxygen reacting.

-\frac{d[O_2]}{dt}=-\frac{1}{2}\frac{d[NO]}{dt}

\frac{d[O_2]}{dt}=\frac{1}{2}\times 0.066M/s=0.033M/s

The rate of O_2 formed is, 0.033 M/s

6 0
3 years ago
Which statement best describes the kinetic molecular
prohojiy [21]

Answer:

A. The kinetic molecular theory relates the properties of a state of matter to the motion of  its molecules.

Explanation:

The higher the kinetic energy of the molecules, the faster its movement will be. The state of a matter will depend on how fast the molecules move. When the molecules barely move, it will be packed tightly and its state will be solid. If the molecules kinetic energy rises, eventually they start moving around and the state will be liquid. If the kinetic energy rises further, the molecule will expand and changed into gas form.

3 0
3 years ago
8) Which one of the following can be broken down in to simpler substances<br>​
Sophie [7]

Answer:

Compounds can be broken down into simpler substances by chemical means, but elements cannot. break a compound into simpler substances; oxygen and hydrogen that water contains.

But where is the following?

3 0
3 years ago
What is the name of the following Arrhenius acid, H3PO3?
pentagon [3]

Answer:

Phosphorous acid

Explanation:

8 0
3 years ago
What kind of reaction happens when two compounds switch elements? Apex
maw [93]

Answer:

A replacement reaction occurs when elements switch places in compounds. This type of reaction involves ions. Generally, more reactive elements replace less reactive elements. A single replacement reaction occurs when one element replaces another element in one compound.

Explanation:

Just figured it out!

8 0
3 years ago
Read 2 more answers
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