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3 years ago

Even though the process is endothermic, snow can sublime. Which tendency in nature accounts for this phase change?

2 answers:

7 0

Even though the process is endothermic, snow can sublime. The tendency in nature that accounts for this phase change is that there is a tendency toward greater entropy. The answer is number 1. The rest of the choices do not answer the question above.

bezimeni [28]3 years ago

5 0

<u>Answer:</u> The correct answer is Option 1.

<u>Explanation:</u>

It is given that the process is endothermic which means that $\Delta H=+ve$

The snow is subliming which means that it is changing its state from solid state to gaseous state directly and for this phase change to take place, $\Delta G$ must be negative.

As, for sublimation process, $\Delta S$ is always increasing and for spontaneous reaction, temperature must also be high.

$\Delta G=\Delta H-T\Delta S$

$-ve=+ve-T(+ve)$

At higher temperature, $\Delta G$ will always be negative and it will be spontaneous reaction and phase change will occur.

Hence, the correct answer is Option 1.

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Fill in the sentences below to explore the process by which a storm becomes a hurricane. some terms may be used more than once.

Reptile [31]

Answer:

The sentences which are made by the given sentences are as :

Wind speeds are below 38 miles per hour, this feature represents the tropical depression.

Explanation:

Here in the question it has been mentioned to form the sentences with the given one:

Wind speeds are below 38 miles per hour, this feature represents the tropical depression.
A tropical disturbance leads to an array of clouds which are disorganized also there are thunderstorms with no rotation or little rotation with it.
When the winds are blowing at a speed of 38 and 74 miles per hour then it is called as a tropical disturbance.
74 miles per hour should be the blowing speed of storm in order to consider it to be a Hurricane.
When the storm reaches a tropical storm stage it gets its name.
All of the storms which get occurred from time to time, among them half or even all get converted into a Hurricane.

These are the sentences which are made by exploring the whole process and by which a storm becomes a Hurricane.

5 0

3 years ago

Write the molecular formula for the following compound.<br>

Sholpan [36]

Answer : The molecular formula of the compound is, $C_8H_9O_3N$

Explanation :

Molecular formula : It is the representation of substance by the symbols and it denotes the number of atoms of each element present in the compound.

Now count the number of carbon, hydrogen, nitrogen and oxygen atoms present in the given compound.

As we see that in the given compound, there are 8 atoms of carbon element, 3 atoms of oxygen element, 1 atom of nitrogen element, 9 atoms of hydrogen element.

Thus, the molecular formula of the compound will be $C_8H_9O_3N$

7 0

2 years ago

These statements describe three different reactions.

Naily [24]

An atom gains an electron from another atom. Hence, option B is the correct answer.

An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons.

When an atom shares electrons with another atom then it results in the formation of a covalent bond.

Whereas when an atom transfer electrons from one atom to another then it results in the formation of an ionic bond.

When the nucleus of an atom splits then it represents a nuclear fission reaction and energy is released during this process.

Hence, option B is the correct answer.

Learn more about the atom here:

brainly.com/question/1566330

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1 year ago

A. Electrons have a charge of_____

Dmitry [639]

Electrons: negative
Protons: positive
Neutrons: nuetral