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3 years ago

Which statement accurately describes what happens when ice melts in terms of energy?

2 answers:

4 0

<span>The ice absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a solid to a liquid. is the answer

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artcher [175]3 years ago

4 0

Answer is D. if you freeze and melt water you can see it moves faster and stuff

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Consider two gases, A and B, are in a container at room temperature. What effect will the following changes have on the rate of

Oksanka [162]

Answer:

B: increase.

Explanation:

When we are considering two gases A and B in a container at room temperature .

We have to find the change on rate of reaction when the number of molecules of gases A is doubled

Let [A]=a and [B]=b

A+B $\rightarrow$ product

Rate of reaction

$R_1=k[A][B]=kab$

We know that concentration is increases with increase in number of moles

When the number of molecules of gases A is doubled then concentration of gases A increases.

Therefore ,[A]=2a

Rate of reaction

$R_2=k(2a)(b)=2kab$

$R_2=2R_1$

Hence, the rate of reaction is 2 times the initial rate of reaction.Therefore, the rate of reaction will increase when the number of molecules of gases A is doubled.

Answer: B: increase.

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4 years ago

Isotopes are atoms of an element

stellarik [79]

D. With the same number of protons and different number of neutrons.

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3 years ago

How would life be different without polythene

Alexxx [7]

Without plastic, we wouldn't have as much of an environmental problem as we have now. Even though plastic has a lot of negatives, it's also made our lives a lot easier over past years. ... Our cars would have been different since a lot of the materials used inside are made out of plastic.

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3 years ago

A molecule in which the central atom has no lone pairs and forms four single bonds is said to have a ________ shape.

Margarita [4]

It should be tetrahedral. Good example is CH4

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3 years ago

Read 2 more answers

Which one of these elements is an alkaline earth metal

In-s [12.5K]

The answer to this problem is Beryllium is an alkaline earth metal.

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4 years ago