InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Define mole concept |
| Answer» The mole concept is a convenient method of expressing the amount of a substance. Any measurement can be broken down into two parts – the numerical magnitude and the units that the magnitude is expressed in. For example, when the mass of a ball is measured to be 2 kilograms, the magnitude is ‘2’ and the unit is ‘kilogram’.<br>Mole Conceptn = N/NA\xa0...Molar mass of a Substance = (Mass of the Substance in grams)/(Number of\xa0Moles) ...Number of\xa0Moles\xa0= (Mass of the Sample)/(Molar Mass) ...Number of Atoms or Molecules = (Number of\xa0Moles)*(6.022*1023) ...1 amu = (1gram)/(6.022*1023) = 1.66*10-24\xa0grams. | |