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BARSIC [14]
3 years ago
11

Select the correct statement (2.5 points) (A) Elements in the same row are similar in size. (B) Elements in the same column have

similar electronic and chemical properties (C) Both (A) and (B) (D) None of the above
Chemistry
2 answers:
Mrrafil [7]3 years ago
8 0

Answer:

B

Explanation:

We are talking about the periodic table in which elements where put under different rows and columns according to their atomic number (number of protons) in ascendant order.

In rows or periods we can find trends in some properties like atomic radius, electronegativity, etc...). So they are not similar in size. Option A is a false statement.

Also, they were organized in groups or columns according to their similar electronic configuration and chemical properties (like noble gases, halogens, etc...) This means option B is the correct statement.

mezya [45]3 years ago
5 0

Answer:

(B) Elements in the same column have similar electronic and chemical properties

Explanation:

The periodic table sorts the elements by their organization, it lists the elements in rows called periods and columns called groups or families, and in ascending order of their atomic numbers.

The horizontal lines in the periodic table are called periods and the vertical columns are called groups, and the electron and chemical properties of the elements in the same group are similar.

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Which of the following is a characteristic property of noble gases? A. They only react with each other B. They do not react chem
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Answer:

B.They do not react chemically

Explanation:

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How do you explain reaction of stiochiometry
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Answer:

Chemical reactions are balanced by adding coefficients so that the number of atoms of each element is the same on both sides. Stoichiometry describes the relationship between the amounts of reactants and products in a reaction.

Explanation:

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3 years ago
0.450 mol of aluminum hydroxide is allowed to react with 0.550 mol of sulfuric acid; the reaction which ensues is: 2Al(OH)3(s) +
Veseljchak [2.6K]

Answer:

The answer to your question is 1.1 moles of water

Explanation:

                     2Al(OH)₃  +   3H₂SO₄   ⇒   Al₂(SO₄)₃  +   6H₂O

                       0.45 mol      0.55 mol                                ?

Process

1.- Calculate the limiting reactant

Theoretical proportion

       Al(OH)₃ / H₂SO₄ = 2/3 = 0.667

Experimental proportion

       Al(OH)₃ / H₂SO₄ = 0.45 / 0.55 = 0.81

From the proportions, we conclude that the limiting reactant is H₂SO₄

2.- Calculate the moles of H₂O

                        3 moles of H₂SO₄ ----------------  6 moles of water

                        0.55 moles of H₂SO₄ -----------    x

                        x = (0.55 x 6) / 3

                        x = 3.3 / 3

                       x = 1.1 moles of water

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3 years ago
What determines the speed at which a particle of matter moves
Zepler [3.9K]

Answer:

The force exerted on it.

Explanation:

As the law of motion states, an object at rest will remain at rest an object in motion will remain in motion unless acted upon by another force.

5 0
3 years ago
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