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guajiro [1.7K]
3 years ago
8

Areas of the periodic table that contain elements that form cations in ionic compounds.

Chemistry
1 answer:
victus00 [196]3 years ago
7 0
If you look at the periodic table, they are usually colored because they have legends to follow. There are three types of elements in the periodic table: metals, nonmetals and metalloids. The metals are the ones that form as cations when ionized. They are usually located on the left to middle portion of the periodic table.
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Cuales eran los objetos fundamentales de los alquimistas?
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4 years ago
Which of these substances are greenhouse gases? Check all that apply. Oxygen carbon dioxide helium methane nitrous oxide.
taurus [48]

The greenhouse gases are carbon dioxide, methane, and nitrous oxide.

The greenhouse effect has been defined as the entrapment of the sun's energy by the gases that result in the earth becoming warmer and a better place to live.

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The greenhouse gases have been carbon dioxide, methane, and nitrous oxide.

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brainly.com/question/11595872

3 0
3 years ago
Consider this combination reaction:
Yuki888 [10]
<h2>The molar enthalpy of decomposition of magnesium oxide is 602 kJ.</h2><h3>FURTHER EXPLANATION</h3><h3><u>Enthalpy is an Extensive Property</u></h3>

Enthalpy is the amount of heat in a system at constant pressure. It is an extensive property. Extensive properties are characteristics that are affected by the amount of substance. Examples of extensive properties are mass and length. The opposite of extensive properties are intensive properties. These are properties that are unique to a substance. They do not vary with the amount. Examples are density and boiling point.

Equations with enthalpy values are called thermochemical equations. The value of the ΔH is specific to the stoichiometric ratio provided in the equation. Therefore, the ΔH value of -1204 kJ is specific for the formation of 2 moles of magnesium oxide. The molar ΔH of formation should then be half of this which is -602 kJ.

<h3><u>Enthalpy depends on the direction of the reaction.</u></h3>

The direction of the reaction influences the enthalpy of the reaction. If the reaction is reversed, the enthalpy of the reversed reaction is equal in magnitude but opposite the sign of the forward reaction.

In this case, the reverse reaction of the formation of magnesium oxide is its decomposition. Therefore, the decomposition of one mole of magnesium oxide will have an enthalpy of +602 kJ.

<h3>LEARN MORE</h3>
  1. Learn more about Molar Enthalpy of Combustion brainly.com/question/10936616
  2. Learn more about Hess' Law brainly.com/question/3194633
  3. Learn more about Specific Heat Capacity brainly.com/question/12976104

Keywords: Enthalpy of formation, enthalpy of decomposition

7 0
4 years ago
Read 2 more answers
Do the molecules at high temperature move faster or slower than the molecules at low temperature?
tresset_1 [31]
They move faster at a higher temperature i believe. i hope this helps
5 0
3 years ago
Anyone can help me please
Vlad1618 [11]

x=3

Use the pythagorean theorem:

a^2 + b^2 = c^2

4^2 + x^2 = 5^2

16 + x^2 = 25

x^2 = 25-16

x^2 = 9

√x^2 = √9

x = 3

5 0
3 years ago
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