Advertisements
Advertisements
प्रश्न
Compute the number of ions present in 5.85 g of sodium chloride
Advertisements
उत्तर
1 mole of NaCl = 23 + 35.5
= 58.5 g of NaCl
Number of moles in 5085 g of NaCl
= `5085/58.5`
= 0.1 moles
Each NaCl formula unit=Na++ Cl–
= 2 ions
Number of ions = 0.2 × 6.022 × 1023
= 1.2044 × 1023 icons
APPEARS IN
संबंधित प्रश्न
What does 2H2S represent ?
What does 5H2S04 represent ?
The valency of sodium is one, write the molecular formula for sodium nitratev ?
If one mole of nitrogen molecules weighs 28 g, calculate the mass of one molecule of nitrogen in grams.
‘Atoms of the same element or different from Dalton’s atomic theory by the Modern Atomic Theory.
Give two examples each of –
- Atoms of the same element
- Atoms of different elements combining to form a molecule.
Explain the term ‘atomicity’.
Name the following:
The compound formed when iron [Fe2+] combines with oxygen [O2−].
Name the following:
A non-metal which forms a polyatomic molecule with more than three atoms.
How many atoms are present in a PO4 3– ion?
What is the fraction of the mass of water due to neutrons?
