This in turn determines whether the substance exists in the solid, liquid, or gaseous state. Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.
Gaseous, meaning <span>relating to or having the characteristics of a gas</span><span>:
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Answer:
0.036 × 10²³ oxygen atoms
Explanation:
Given data:
Mass of compound = 0.24 g
Number of oxygen atoms = ?
Solution:
First of all we will calculate the number of moles of compound.
number of moles = mass/ molar mass
Number of moles = 0.24 g/ 100.1 g/mol
Number of moles = 0.002 mol
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole of CaCO₃ contain 3 moles of oxygen atom.
0.002 mol × 3 = 0.006 moles of oxygen atoms.
Number of oxygen atoms:
1 mole = 6.022 × 10²³ number of oxygen atoms
0.006 mol × 6.022 × 10²³ f oxygen atoms / 1 mol
0.036 × 10²³ oxygen atoms
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