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il63 [147K]
3 years ago
11

WHAT ARE THE CHARACTERISTICS OF AN ATOM?

Chemistry
2 answers:
a_sh-v [17]3 years ago
6 0

Answer:

The characteristics are as follows:

-It is microscopic.

-It contains three sub atomic particles namely: electrons, protons and neutrons.

-It is the smallest unit of any substance (except for living bodies since smallest unit of them is cell).

-When seen from microscope atoms appear to be blur, spheres.

-They form ions(by losing or gaining electrons) and molecules(by combining with itself or other atoms).

<em><u>Hope this helps :)</u></em>

saveliy_v [14]3 years ago
3 0
It is microscopic
It contains three sub atomic particles namely :protons, neutrons and electrons
It is the smallest substance of matter
They form ions and molecules
When seen under microscope it appears to be blur, spheres.
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A.) <span>Each molecule of hydrochloric acid, HCl, contains one atom of hydrogen and "One atom of Chlorine"

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Acetic acid, CH3CO2H, reacts with ethanol, C2H5OH, to form water and ethyl acetate, CH3CO2C2H5. The equilibrium constant for thi
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Explanation:

The initial concentrations for a mixture :

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Water at equilibrium = 0.40 M

CH3COOH + C_2H_5OH\rightleftharpoons CH_3CO_2C_2H_5+H_2O

Initially:

0.15 M            0.15 M            0.40 M   0.40 M

At equilibrium

(0.15-x)M       (0.15-x) M     (0.40+x) M   (0.40+x) M

The equilibrium constant is given by expression

K_c=\frac{[CH_3CO_2C_2H_5][H_2O]}{[CH_3COOH][C_2H_5OH]}

4.0=\frac{(0.40-x)\times (0.40-x)}{(0.15+x)\times (0.15+x)}

Solving for x:

x = 0.0333

The equilibrium concentrations for a mixture :

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Ethanol at equilibrium = (0.15-x)M = (0.15-0.033) M = 0.117 M

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Answer:

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Explanation:

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(a)  When increase the temperature of the reactants or system then equilibrium will shift in forward direction where there is less temperature. It is possible for an endothermic reaction.

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