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3 years ago

2) Which of the following statements best describes an element?

Chemistry

2 answers:

KiRa [710]3 years ago

7 0

Answer:

The correct answer is <u><em>E) a material consisting of only one type of atom .</em></u>

Explanation:

A chemical element is called a substance that is formed by atoms of the same type whose nuclei have the same number of protons, called atomic number.

It is considered a chemical element to the simplest form of a substance, therefore it is that substance that cannot be decomposed by a chemical reaction into simpler ones.

The elements combine to form compounds. The chemical behavior of the elements is related to the structure of the nucleus and the configuration of its electrons.

The chemical elements and their characteristics are summarized in what is called a periodic table of the elements, where the elements are arranged in increasing order of atomic number.

Finally, <u><em>the correct answer is E) a material consisting of only one type of atom .</em></u>

mixas84 [53]3 years ago

3 0

Answer:

Explanation:

The answer woul be E because elements are made of one type of atoms

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Answer:

28 g/mol, N2

Explanation:

Given data:

Volume of gas = 5.0 L

Mass of gas = 6.3 g

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Solution:

We will calculate the density first.

d = mass/ volume

d = 6.3 g/ 5.0 L

d = 1.26 g/L

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M = dRT/P

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3 years ago

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VladimirAG [237]

Answer:

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Explanation:

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Use the periodic table to answer the questions below.

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2 years ago

Read 2 more answers

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ANTONII [103]

The formation of ammonia gas involves reacting hydrogen gas and nitrogen gas in a mole ratio of 3 to 1. as shown below:

$N_2 + 3H_2 \rightarrow 2NH_3$

<h3>What is the equation of the formation of ammonia?</h3>

Ammonia gas is formed from the reaction between nitrogen gas and hydrogen gas.

Three moles of hydrogen gas will react with 1 mole of nitrogen gas to form 2 moles of ammonia gas.

The equation of the reaction is given below as:

$N_2 + 3H_2 \rightarrow 2NH_3$

Therefore, the formation of ammonia gas involves reacting hydrogen gas and nitrogen gas in a mole ratio of 3 to 1.

Learn more about ammonia gas at: brainly.com/question/7982628

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2 years ago