Advertisements
Advertisements
प्रश्न
The difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.
उत्तर
Number of electrons in Na atom = 11
Number of electrons in Na+ = 10
For 1 mole of Na atom and Na+ the difference in electrons = 1 mole
For 100 moles of Na atoms and Na ions the
difference = 100 moles of electrons
Mass of 100 moles of electrons = 0.0548002 g
Mass of 1 moles of electron = `0.0548002/100"g"`
Mass f 1 electron = `0.0548002/(100 xx 6.022 xx 10^23)`
= 9.1 × 10−28 g
= 9.1 × 10−31 g
APPEARS IN
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Nitric acid, HNO3
What name is given to the amount of substance containing 6.022 × 1023 particles(atoms,molecules or ions) of a substance ?
What is the mass of 0.2 mole of oxygen atoms ?
How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 23 u)
Define the term.
Molar volume
Define the term Relative atomic mass.
How many grams of H2O are present in 0.2 mole of it?
Four grams of caustic soda contains ______.
Correct the statement, if required.
The relative atomic mass of an element is the number of times one molecule of an element is heavier than `1/12` the mass of an atom of C12.
How many grams are there in the following?
2 moles of the hydrogen molecule, H2.
