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valina [46]
3 years ago
9

The _____ identifies an element.

Chemistry
2 answers:
larisa [96]3 years ago
8 0
B the atomic number becose of the
marin [14]3 years ago
5 0
Atomic Number. It represents the number of protons in an atom of a particular element, which is what identifies that particular element. If the number of protons is different, the element is different.
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How many Mg atoms are presented in 3.00 moles of MgCl2
ella [17]

Answer:

1.81 x 10²⁴ atoms

Explanation:

To find the number of atoms in the given number of moles, we need to understand that every substance contains the Avogadro's number of particles.

More appropriately, a mole of any substance will contain the Avogadro's number of particles which is 6.02 x 10²³ atoms

 So;

           If 1 mole of a substance  = 6.02 x 10²³ atoms;

               3 mole of MgCl₂ will contain 3 x 6.02 x 10²³ = 1.81 x 10²⁴ atoms

3 0
3 years ago
What does Earth's hydrosphere include? the water on Earth the hard outer part of Earth the layer of gases surrounding Earth the
Makovka662 [10]

It includes all the water on earth.

7 0
3 years ago
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Why do different materials have similar properties
Deffense [45]

Answer:

The difference in the number of protons and neutrons in atoms account for many of the different properties of elements.

7 0
2 years ago
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Structures of compounds people use every day are shown. From which group of unsaturated hydrocarbons is each derived? 2 carbons
Savatey [412]

The group of unsaturated hydrocarbons which 2 carbons are double bonded together, with H bonded to the left, and C H 2 bonded below left, above right, and below right is derived from <u>Alkenes</u>

<h3>What are organic compounds?</h3>

Organic compounds are compounds which contains carbon and hydrogen

Some few classes or organic compounds or hydrocarbons are as follows:

  • Alkanes
  • Alkenes
  • Alkynes
  • Alkanols
  • Alkanoic acid
  • Ketones
  • Esters

So therefore, the group of unsaturated hydrocarbons which 2 carbons are double bonded together, with H bonded to the left, and C H 2 bonded below left, above right, and below right is derived from <u>Alkenes</u>

Learn more about organic compounds:

brainly.com/question/1594044

#SPJ1

3 0
2 years ago
Since electrons can easily move from one atom to another,
Setler [38]
The correct answer is that last one
3 0
3 years ago
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