The number of moles of krypton are 7.6 moles
What is Mole?
The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter.
The mole provides a link between an easily measured macroscopic property, bulk mass, and an extremely important fundamental property, number of atoms, molecules, and so forth.
What is Avogadro constant?
The number of entities composing a mole has been experimentally determined to be
6.02214179×10^23
A fundamental constant named Avogadro’s number (NA) or the Avogadro constant in honor of Italian scientist Amedeo Avogadro. This constant is properly reported with an explicit unit of “per mole,” a conveniently rounded version being
6.022×1023/mol
How to Calculate the mole of Krypton?
According to Ideal gas law
PV = nRT
Where
P = Pressure
V = Volume
n = number of moles
R = Universal gas constant
T = Temperature
Given P = 5.80 atm
V = 3.25 L
T = 25.5 °C
Now substituting the Value in the formula PV = nRT
.∴ n = PV/RT
n=( 5.80*3.15*1000) / 8.314*298.5
n=7.59 ≈ 7.6 moles
Therefore the moles of krypton is 7.6 moles
Learn more about mole concept here
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