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Minchanka [31]
3 years ago
6

A reaction mixture is at equilibrium. What happens when the amount of one of the

Chemistry
1 answer:
11Alexandr11 [23.1K]3 years ago
3 0

Answer:

The equilirbium shifts to side where the reactant is lowered so that the reactant comes back to normal level for equilibrium.

Explanation:

This is the basic premise of Le Chatelier's principle which can be used to predict the effect of a change in conditions on some chemical equilibria.

If A--->B  is at equiblirum and if concentration of A goes down, then the equilirbium shifts left to make more A.

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How many atoms are in 34.2 grams of carbon?
Oksana_A [137]

Answer:

6.02*1022

Explanation:

I don't know why

8 0
3 years ago
Explain what is meant by energy and list two units in which energy is measured
dybincka [34]

Answer:

J (joule)  W(watt)

Explanation:

If you're looking for the definition it is

The most common definition of energy is the work that a certain force can do. Energy also cannot be created or destroyed and some examples are

light, heat, mechanical, potential, and kinetic

4 0
3 years ago
Consider the reaction 2 NO + O2 → 2 NO2
Sonbull [250]

Answer:

(a) Rate at which NO_2 is formed is 0.050 M/s

(b) Rate at which O_2 is consumed is 0.0250 M/s.

Explanation:

The given reaction is:-

2NO+O_2\rightarrow 2NO_2

The expression for rate can be written as:-

-\frac{1}{2}\frac{d[NO]}{dt}=-\frac{d[O_2]}{dt}=\frac{1}{2}\frac{d[NO_2]}{dt}

Given that:- \frac{d[NO]}{dt}=-0.050\ M/s (Negative sign shows consumption)

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

-\frac{d[NO]}{dt}=\frac{d[NO_2]}{dt}

-(-0.050\ M/s)=\frac{d[NO_2]}{dt}

\frac{d[NO_2]}{dt}=0.050\ M/s

(a) Rate at which NO_2 is formed is 0.050 M/s

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

-\frac{1}{2}\times -0.050\ M/s=-\frac{d[O_2]}{dt}

\frac{d[O_2]}{dt}=0.0250\ M/s

(b) Rate at which O_2 is consumed is 0.0250 M/s.

5 0
3 years ago
How many moles make up 5.7491x1025 molecules of Dinitrogen pentoxide (N2O5)?
pav-90 [236]

Answer:

<h2>95.5 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{5.7491 \times  {10}^{25} }{6.02 \times  {10}^{23} }  \\

We have the final answer as

<h3>95.5 moles to 3 sig. figures</h3>

Hope this helps you

6 0
3 years ago
The theory that all substances consist of tiny pieces of matter
frosja888 [35]

Answer:

Hey

It should be Atomic theory,

First proposed in the 15th centery by Aristotle, it states that all matter is made of <em><u>induvisable particles called atoms...</u></em>

6 0
3 years ago
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