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babunello [35]
3 years ago
15

How do carbon 12 and carbon 13 differ?

Physics
1 answer:
astraxan [27]3 years ago
4 0

Answer:

A) & B)

Explanation:

First, the numbers 12 and 13 represent the <em>atomic mass number</em> of the atoms.

  • So, A) is true: thus Carbon12 and Carbon 13 have different mass numbers.

The <em>mass number</em> is equal to the total number of protons and neutrons. Consider that any element has the same number of protons, regardless of the number of neutrons. The number of protons in Carbon is 6.

The amount of neutrons can be calculated by: <em>mass number </em>minus <em>number of protons.</em>

For Carbon 12: 12-6=6

For Carbon 13: 13-6=7

  • B) is true, we just proved they have different amounts of neutrons.

In order for the charge of the atom to be neutral, the amount of electrons must be equal to the number of protons (as they have opposite charges). And we now know that the number of protons in Carbon12 and Carbon13 are always the same

  • C) is false, the number of electrons is the same in both atoms

The atomic charges in both are neutral, due to the fact that they have the same amount of protons and electrons in both cases. Is only the neutrons (thus the mass numbers)that change

  • D) is false, they have equal atomic charges
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Law of conservation of energy states that energy can neither be created nor be destroyed but it can only be transformed from one form to another form.

Here, the potential energy of the coffee filter is getting converted into kinetic energy of the coffee filter and some energy is lost by it which is gained by the air molecules in the form of kinetic energy.

So, calculating the potential energy of coffee filter, we use the equation:

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E=\frac{1}{2}mv^2

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