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In-s [12.5K]
2 years ago
14

Which of the following actions decreases the entropy of a system?

Chemistry
1 answer:
Keith_Richards [23]2 years ago
5 0

Answer:

b- freezing water

Explanation:

Solid<liquid<gas is the general rule for entropy increase

Freezing water would change the phase from liquid to solid which would lead to less entropy

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What are oil and waters properties of matter?
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Answer:

Two other beneficial properties of the oil include the inhibition of corrosion of metal surfaces, such as steel, and the removal of dirt and detritus via detergency.

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3 years ago
List 2 extensive properties and 3 intensive properties of a 5.0g, 1 cm3 cube of silver
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Properties of matter can be broadly classified into two categories:

Physical properties which usually involve a change in the state of matter and Chemical properties which involve a change in the chemical composition of matter.

Now, physical properties can be further classified as:

Extensive: these depend on the amount of the substance, eg: mass, volume  

Intensive: these do not depend on the amount of the substance eg: density, color, melting point, boiling point

Here we are given a 5.0 g and 1 cm3 silver cube :

Therefore:

Extensive properties are-

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2) Volume of silver = 1 cm3

Intensive properties are:

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3) Color = white/gray

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3 years ago
The sum of the potential energy and the kinetic energy of an object is its thermal energy. True or false?​
liq [111]

Answer:

false

Explanation:

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Answer: The statement (B) is not true about chemical reactions.

Explanation:

A chemical reaction rate is affected by the several factors few of which are temperature, concentration of reactants, surface area etc.

In a chemical reaction, if temperature is increased then the rate of reaction will increase because it will increase the average kinetic energy of the reactant molecules. Thus, large number of molecules will have minimum energy required for an effective collision.

It is known that increasing the amount of reactants will increase the rate of reaction.

Therefore, rate of reaction will change if concentration or temperature is changed.

Hence, the statement (B) is not true about chemical reactions.

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