Question

Calculate no. of molecules in 22.4 L of H2O at STP.??​

Answer 1

Answer:

no of moles :- vol at stp/ 22.4

22.4/22.4=1 mole

no of molecule = moles * 6.022*10^23

=1*6.022*10^23

so no of molecule 6.022*10^23

Answer 2

Answer:

The above question asks for the number of molecules 22.4L of Water contains in STP. STP stands for Standard Temperature and Pressure which is defined  as 1 atmosphere of pressure and 0° Celsius (273.15 Kelvin).

Number of moles equals= VOLUME AT STP / Given VOLUME

                                         = 22.4/22.4

                                         = 1

Number of molecules present equals = Number of mole * 6.022*10^23

                                                                = 1 * 6.022*10^23

                                                                  = 6.022*10^23  (Answer).