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what is avagadro's number? and what is mole ? what is S.T.P?
what is avagadro's number? and what is mole ? what is S.T.P?
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Solution
STP stands for Standard Temperature and Pressure. STP most commonly is used when performing calculations on gases, such as gas density. The standard temperature is 273 K (0° Celsius) and the standard pressure is 1 atm pressure. At STP, one mole of gas occupies 22.4 L of volume (molar volume).
Avogadro's number is 6.022 X 1023. It is the number of molecules of any gas present in a volume of 22.41 L and is the same for the lightest gas as for a heavy gas.
Mole is the amount of pure substance containing the same number of chemical units as there are atoms in exactly 12 grams of C12 (i.e., 6.023 X 1023 or Avogardo number)
STP stands for Standard Temperature and Pressure. STP most commonly is used when performing calculations on gases, such as gas density. The standard temperature is 273 K (0° Celsius) and the standard pressure is 1 atm pressure. At STP, one mole of gas occupies 22.4 L of volume (molar volume).
Avogadro's number is 6.022 X 1023. It is the number of molecules of any gas present in a volume of 22.41 L and is the same for the lightest gas as for a heavy gas.
Mole is the amount of pure substance containing the same number of chemical units as there are atoms in exactly 12 grams of C12 (i.e., 6.023 X 1023 or Avogardo number)
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