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Sagot :
No. of moles at STP = Volume at STP (litres) / Molar volume at STP (litres)
The temperature of 273 K and pressure of 1 atmosphere are known as standard temperature and pressure. At STP, one mole of any gas will have a volume of 22.4 L. This volume is known as molar volume of a gas at STP. The formula to find out the number of moles at STP is
No. of moles at STP = Volume at STP (litres) / Molar volume at STP (litres)
Example: How many moles are in 224mL of CO2 at STP?
Standard volume=22.4 L
It means that 1 mole of any atom, molecule or ion occupies 22.4 L of volume at STP (Standard Temperature and Pressure)
1 mole of CO2 = 22.4 L
Given volume = 224 mL = .224 L ( 1 L = 1000 mL)
No. of moles in .224 L = Given volume/Standard volume
= .224/22.4 = 0.01 mole
To learn more about STP visit:
https://brainly.com/question/24041708
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