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Eddi Din [679]
3 years ago
7

A student submits the following work on the mass number, but he has made a few mistakes. Select all of his mistakes.

Chemistry
2 answers:
MatroZZZ [7]3 years ago
8 0

Answer:

1. <u>Calculating the mass number for an atom requires that we know the atomic number and the number of protons in the atom's nucleus.</u>

2. <u>The mass number then gives us the average weight of atoms of a given element.</u>

3. <u>However, as long as the number of protons equals the number of neutrons, the values balance out and we always obtain a whole number for the mass number.</u>

Explanation:

MatroZZZ [7]3 years ago
4 0

Do you know the answer?

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Fynjy0 [20]

Answer:

The answer is letter A. Diamond

Explanation:

The diamond is a crystalline form of carbon, with a cubic structure, of the sp³ type, that is, each carbon atom of the structure is linked to four other carbon atoms, forming a tetrahedral geometry.

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3 years ago
A meteor falls toward Earth's surface. Given that the acceleration due to
ICE Princess25 [194]

Answer:

E = 147000  J

Explanation:

Given that,

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We need to find the potential energy of the meteor. The formula for the potential energy is given by :

E=mgh

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E=50\times 9.8\times 300\\\\E=147000\ J

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4 0
3 years ago
What is the concentration of a solution?​
Nimfa-mama [501]

The concentration of a substance is the quantity of solute present in a given quantity of solution.

8 0
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When you have finished adding the necessary amount of NaOH to your beaker, what color will the litmus paper turn?
Svetllana [295]

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Litmus paper is the indicator that detects the nature of the solution, whether it is acidic or basic.

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NaOH is a strong base, so when a red litmus paper is dipped in the beaker having necessary amount of NaOH, the red litmus paper turns into blue.

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