SSC
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
state the number of atoms present in 1mole of He
|
|
6.022 X 1019
|
|
|
6.022 X 1020
|
|
|
6.022 X 1021
|
|
|
6.022 X 1023
|
Explanation:
Detailed explanation-1: -1 mole = 6. 022 × 1023 units. So for atoms, 1 mole = 6.022 × 1023 atoms. Thus, 6.022 × 1023 atoms of He contains 1 mole.
Detailed explanation-2: -One mole of hydrogen atoms contains 6.02×1023 6.02 × 10 23 hydrogen atoms and occupies 22.4 L.
Detailed explanation-3: -The MOLE (mol) is a unit of measurement that is the amount of a pure substance containing the same number of chemical units (atoms, molecules etc.) as there are atoms in exactly 12 grams of carbon-12 (i.e., 6.022 X 1023).
There is 1 question to complete.