GK
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
kilogram
|
|
|
ampere
|
|
|
kelvin
|
|
|
mole
|
Detailed explanation-1: -One mole (mol) contains exactly 6.02214076 × 1023 elementary entities. This number is the fixed numerical value of the Avogadro constant, NA, when expressed in the unit mol−1 and is called the Avogadro number.
Detailed explanation-2: -The unit is called the mole. representative particles of that substance and is the SI unit for measuring the amount of a substance. The number of representative particles in a mole, 6.02 × 1023, is called Avogadro’s number.
Detailed explanation-3: -A mole (mol) is the amount of a substance that contains 6.02×1023 representative particles of that substance. The mole is the SI unit for amount of a substance.
Detailed explanation-4: -The name mole is an 1897 translation of the German unit Mol, coined by the chemist Wilhelm Ostwald in 1894 from the German word Molekül (molecule). The related concept of equivalent mass had been in use at least a century earlier.
Detailed explanation-5: -Mole (mol) = the SI base unit used to measure the amount of a substance. 1 mole =6.02 x 1023 representative particles. 18-Dec-2017