Deh Swaggz
Apr 11
How many chlorine molecules are in 20cm^3 of chorine gas at STP ?
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Apr 11
At STP (Standard Temperature and Pressure), 1 mole of any gas occupies 22.4 liters or 22,400 cm^3.
The molar volume of a gas at STP is 22.4 L/mol or 22,400 cm^3/mol.
To find the number of chlorine molecules in 20 cm^3 of chlorine gas at STP, we first need to calculate the number of moles of chlorine gas in 20 cm^3.
Number of moles = Volume / Molar volume
Number of moles = 20 cm^3 / 22,400 cm^3/mol
Number of moles = 0.000892857 moles
Now, we can use Avogadro's number to find the number of chlorine molecules in 0.000892857 moles of chlorine gas.
1 mole of any substance contains 6.022 x 10^23 molecules.
Number of chlorine molecules = Number of moles x Avogadro's number
Number of chlorine molecules = 0.000892857 moles x 6.022 x 10^23 molecules/mol
Number of chlorine molecules = 5.375 x 10^20 molecules
Therefore, there are approximately 5.375 x 10^20 chlorine molecules in 20 cm^3 of chlorine gas at STP.
The molar volume of a gas at STP is 22.4 L/mol or 22,400 cm^3/mol.
To find the number of chlorine molecules in 20 cm^3 of chlorine gas at STP, we first need to calculate the number of moles of chlorine gas in 20 cm^3.
Number of moles = Volume / Molar volume
Number of moles = 20 cm^3 / 22,400 cm^3/mol
Number of moles = 0.000892857 moles
Now, we can use Avogadro's number to find the number of chlorine molecules in 0.000892857 moles of chlorine gas.
1 mole of any substance contains 6.022 x 10^23 molecules.
Number of chlorine molecules = Number of moles x Avogadro's number
Number of chlorine molecules = 0.000892857 moles x 6.022 x 10^23 molecules/mol
Number of chlorine molecules = 5.375 x 10^20 molecules
Therefore, there are approximately 5.375 x 10^20 chlorine molecules in 20 cm^3 of chlorine gas at STP.
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