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Tpy6a [65]
4 years ago
7

6) When a substance such as ice melts, its temperature increases. Describe what happens to the arrangement of the water molecule

s as the temperature increases
Chemistry
1 answer:
Vinvika [58]4 years ago
4 0
When temperature increases, there is more energy in a substance. For example, when water boils, more energy is produced. The arrangement of molecules in a solid are closer together and more packed, while the arrangement of molecules in a liquid are father apart and less packed.
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What two trends are commonly seen in modern monthly co2 concentration charts??
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3 years ago
What is the source of the organic matter needed for most fertile soil
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decaying plants

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4 years ago
Light brings many chemical changes. Can you think of any chemical change brought about by light? ​
strojnjashka [21]

Answer:

MRCORRECT has answered the question

Explanation:

Film photography is another example ofchemical reaction by light. In this example, the chemical compounds coated on the film go through a chemical reaction. ... These plates (usually made of aluminum) are coated with a photosensitive compound consisting of a polymer and a photosensitivechemical system.

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4 years ago
Calculate the standard cell potential (E∘) for the reaction X(s)+Y+(aq)→X+(aq)+Y(s) if K = 8.97×10−3. Express your answer to thr
puteri [66]

Answer: The standard cell potential (E∘) for the reaction X(s)+Y^+(aq)\rightarrow X^+(aq)+Y(s)  is -0.121 V

Explanation:

The reaction is:

X(s)+Y^+(aq)\rightarrow X^+(aq)+Y(s)

Relation between standard Gibbs free energy and equilibrium constant follows:

\Delta G^o=-RT\ln K

where,

\Delta G^o = Standard Gibbs free energy = ?

R = Gas constant = 8.314J/K mol

T = temperature = 298 K

K= equilibrium constant = 8.97\times 10^{-3}

Putting values in above equation, we get:

\Delta G^0=-(8.314J/Kmol\times 298K\times \ln (8.97\times 10^{-3})\\\\\Delta G^0=11678.9J/mol

To calculate standard Gibbs free energy, we use the equation:

\Delta G^o=-nFE^o_{cell}

Where,

n = number of electrons transferred = 1

F = Faradays constant = 96500 C

E^o_{cell} = standard cell potential = ?

Putting values in above equation, we get:

11678.9J/mol=-1\times 96500\times E^0_{cell}

\frac{11678.9J/mol}{-96500}=E^0_{cell}

-0.121V=E^0_{cell}

Thus standard cell potential (E∘) for the reaction X(s)+Y^+(aq)\rightarrow X^+(aq)+Y(s)  is -0.121 V

5 0
4 years ago
Two scientists wrote a paper detailing their research and conclusions and submitted it to a scientific journal. Several months l
Semmy [17]
<span>Two scientists wrote a paper detailing their research and conclusions and submitted it to a scientific journal. Several months later, they received the paper back from the publisher with many comments attached from several fellow scientists. It is either that they revise their study or replicate the study. Most scientists would revisit their work and the findings they had from their research. Most probable if they were successful and the comments of the publisher and the co-scientists were positive they could replicate the study to validate its accountability.<span>
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6 0
3 years ago
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