explain 1 mole, Avogadro's law
Answers
Answer:
Explanation:
The mole is the unit of amount in chemistry. It provides a bridge between the atom and the macroscopic amounts of material that we work with in the laboratory. It allows the chemist to weigh out amounts of two substances, say iron and sulfur, such that equal numbers of atoms of iron and sulfur are obtained. A mole of a substance is defined as:
The mass of substance containing the same number of fundamental units as there are atoms in exactly 12.000 g of carbon 12.
Fundamental units may be atoms, molecules, or formula units, depending on the substance concerned. At present, our best estimate of the number of atoms in 12.000 g of carbon 12 is 6.022 x 1023, a huge number of atoms
Avogadro's Law
At constant pressure and temperature, Avogadro’s law can be expressed via the following formula:
V ∝ n
V/n = k
Where V is the volume of the gas, n denotes the amount of gaseous substance (often expressed in moles), and k is a constant. When the amount of gaseous substance is increased, the corresponding increase in the volume occupied by the gas can be calculated with the help of the following formula:
V1/n1 = V2/n2 ( = k, as per Avogadro’s law).
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