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vladimir1956 [14]
3 years ago
8

More heat is required to raise the temperature of water than any other substance. This is a description of the unique property o

f water known as _____.
Chemistry
1 answer:
Anarel [89]3 years ago
5 0

Answer:

These hydrogen bonds are responsible for some of water's unique properties: Water has a high heat capacity , which is the amount of heat that must be added to raise its temperature. Specific heat is the heat required to raise the temperature of 1 g of a substance by 1o C.

Explanation:

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Reduction and oxidation must occur together. The electrons from the oxidized species are transferred to the reduced species. Che
Aneli [31]

Explanation:

When a specie tends to lose electrons in a chemical reaction then it means oxidation has taken place. When a specie tends to gain electrons then it means reduction has taken place.

So, for the given reactions the value of E_{o} are as follows.

    Zn^{2+} + 2e^{-} \rightarow Zn,      E_{o} = -0.76 V

    Cu^{2+} + 2e^{-} \rightarow Cu,      E_{o} = 0.34 V

   \Delta G^{o} = -nFE^{o}_{cell}

(a)   Therefore, according to the given reactions the process is reduction.

(b)   Here,   n = 2

So, value of Zn^{2+} is as follows.

     \Delta G^{o}_{Zn^{2+}} = -2 \times (-0.76) \times 96500

                   = +146680 V

  \Delta G^{o}_{Cu^{2+}} = -2 \times (-0.34) \times 96500

                   = -65620 V

(c)  As per the calculated values, Zn^{2+} is the best reducing agent and Cu^{2+} is the best oxidizing agent.

Also, more positive is the E_{o} value more good it acts as an oxidizing agent. Hence, it is able to favor reduction.

Therefore, Cu^{2+} will more strongly favor reduction.

7 0
3 years ago
Given the equation representing a reaction: H2 O2 --> H2O . What is the total mass of water formed when 8 grams of hydrogen r
Brrunno [24]
<span>2 H</span>₂<span> + O</span>₂<span> = 2 H</span>₂<span>O

4 g H</span>₂ ------------ 32 g O₂----------- 36 g H₂O
<span> 8 g H</span>₂ ------------ 64 g O₂------------ ? g H₂O
<span>
Mass of H</span>₂O :
<span>
64 * 36 / 32 = 

2304 / 32 =  72 g of H</span>₂O
<span>
hope this helps!




</span>
5 0
3 years ago
What are 7 facts about Conduction?
Daniel [21]
Conduction, transfer of heat or electricity through a substance, resulting from a difference in temperature between different parts of the substance, in the case of heat, or from a difference in electric potential, in the case of electricity. Since heat is energy associated with the motions of the particles making up the substance, it is transferred by such motions, shifting from regions of higher temperature, where the particles are more energetic, to regions of lower temperature. The rate of heat flow between two regions is proportional to the temperature difference between them and the heat conductivity of the substance. In solids, the molecules themselves are bound and contribute to conduction of heat mainly by vibrating against neighboring molecules; a more important mechanism, however, is the migration of energetic free electrons through the solid. Metals, which have a high free-electron density, are good conductors of heat, while nonmetals, such as wood or glass, have few free electrons and do not conduct as well. Especially poor conductors, such as asbestos, have been used as insulators to impede heat flow (see insulation). Liquids and gases have their molecules farther apart and are generally poor conductors of heat. Conduction of electricity consists of the flow of charges as a result of an electromotive force, or potential difference. The rate of flow, i.e., the electric current, is proportional to the potential difference and to the electrical conductivity of the substance, which in turn depends on the nature of the substance, its cross-sectional area, and its temperature. In solids, electric current consists of a flow of electrons; as in the case of heat conduction, metals are better conductors of electricity because of their greater free-electron density, while nonmetals, such as rubber, are poor conductors and may be used as electrical insulators, or dielectrics. Increasing the cross-sectional area of a given conductor will increase the current because more electrons will be available for conduction. Increasing the temperature will inhibit conduction in a metal because the increased thermal motions of the electrons will tend to interfere with their regular flow in an electric current; in a nonmetal, however, an increase in temperature improves conduction because it frees more electrons.

4 0
3 years ago
Read 2 more answers
Liquid water is about 800 times denser than dry air under standard conditions. Use kinetic molecular theory to explain this diff
Savatey [412]

<em>Kinetic molecular Theory points:</em>

1. Gases molecules are always in random motion.

2. Gases molecule collide with each other and with the walls of container.

3.  Gases molecules total volume is negligible as compare to container.

4. There is no attractive forces between the gases particles

5. K.E is directly proportional to absolute temperature.

<em>Why liquid are denser than gases according to K.M.T:</em>

1. As gases are in random motion, so they have weak forces/ no attractive forces (Acc. to KMT) due to this they are apart as compare to liquid which have stronger forces are closer to each other. So volume of gases will be greater. d= m/v

2.  K. E of gases are greater than liquid due to this gases move randomly, apart from each another. Due to this their volume will be greater. d= m/v

3. Gases molecules total volume is negligible as compare to container which show that gases molecules have large spaces between them which causes lower in density.

4 0
3 years ago
What does the reproductive system control?
Aliun [14]
Sperm and also sex what type of question is that lol
3 0
2 years ago
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