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प्रश्न
Fill in the following blanks :
1 mole contains .............. atoms, molecules or ions of a substance.
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उत्तर
1 mole contains 6.022 × 1023 atoms, molecules or ions of a substance.
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संबंधित प्रश्न
How many atoms are present in a H2S molecule?
Write the molecular formulae of Iron (II) sulphide :
Write the molecular formulae of Calcium phosphate :
The valency of sodium is one, write the molecular formula for sodium oxide ?
State the term
The symbolic representation of a molecule ______
Which contains more molecules, 10 g of sulphur dioxide (SO2) or 10 g of oxygen (O2) ?
(Atomic masses : S = 32 u ; O = 16 u)
‘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.
‘Dilute hydrochloric acid is added to sodium hydroxide’. Give a word equation and a molecular equation of the same. Is the equation written, a balanced equation. Give reasons.
Molecule containing more than three atoms are known as ______.
Express each of the following in kilograms
5.873×10−21g
