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Oksana_A [137]
3 years ago
9

The image shows the representation of an unknown element in the periodic table. A square is shown. Inside the square twelve is w

ritten at the top righthand side. To the middle left side, Symbol is written. Below it Name is written. And further below near the bottom edge of the square, twenty-four point three zero five is written. Based on the representation, which of the following statements about the element is true? The number of neutrons in an atom of the element is 24. The combined mass of all the protons and electrons is 24.305. The combined mass of all the neutrons and electrons is 24.305. The mass number of the most common isotope of the element is 24.
Chemistry
1 answer:
avanturin [10]3 years ago
7 0

Answer:

The combined mass of all the protons and electrons is 24.305.

Explanation:

From the information given about the atom, we can see that the relative atom mass of the element is 24.305.

The relative atomic mass of an atom is the combined mass of all its isotope in proportion of their geonormal abundances. On the periodic table, this mass deals with the amount of protons and neutrons present in a given atom.

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The three types of nuclear radiation in increasing order of penetrating power are ____.
cricket20 [7]

Answer:

The three types of nuclear radiation in increasing order of penetrating power are ____.

alpha, beta, gamma

Explanation:

Alpha Ray: This has the least penetrating power because the particles produced during decay are large in  quantity but they have a very low energy which dosent alow them to move far through space because the are ususally blocked.

Beta ray : they have more penetrating power than alpha rays because they a bit higher in energy and quantity {size}

Gamma Ray;  this has the most penetrating power. they are highly powerful  waves but do little at ionization of other atoms or molecules.  it penetrates through molecules very easily due to its size and energy.

5 0
3 years ago
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atroni [7]
I hope this helps you;);

6 0
3 years ago
♡
Oksi-84 [34.3K]

Your question has been heard loud and clear.

Both scientific laws and scientific theories are not based on hypothesis.

Because , scientific laws are proven and so they are real not hypothetical.

Whereas scientifc theories can be hypothetical.

Thank you

4 0
3 years ago
Explain the difference between molecule and compound
nadya68 [22]
Answer:
A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds.

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8 0
2 years ago
Solid silver chloride, AgCI(s), decomposes to its elements when exposed to sunlight Write a balanced equation for this reaction
Mrac [35]

Answer: The coefficient in front of AgCl when the equation is properly balanced is 2.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

Decomposition of silver chloride is represented as:

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Thus the coefficient in front of AgCl when the equation is properly balanced is 2.

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3 years ago
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