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प्रश्न
Fill in the blank
Avogadro's number is equal to ______
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उत्तर
Avogadro's number is equal to 6.023 x 1023
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संबंधित प्रश्न
Calculate the molar mass of the following substance:
Sulphur molecule, S8
If the aluminium salt of an anion X is Al2X3, what is the valency of X ? What will be the formula of the magnesium salt of X ?
What is the mass of 5 moles of sodium carbonate (Na2CO3) ?
(Atomic masses : Na = 23 u ; C = 12 u ; O = 16 u)
Explain with examples what is meant by a 'mole' of a substance.
Two oxides of a metal (M) have 20.12% and 11.19% oxygen. The formula of the first oxide is MO. Determine the formula of the second oxide.
Correct the following statement :
Equal masses of all gases under identical conditions contain the same number of molecules.
Complete the following calculations. Show working for complete credit :
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From the equation for burning of hydrogen and oxygen
\[\ce{2H2 + O2 -> 2H2O}\] (Steam)
Write down the number of mole (or moles) of steam obtained from 0.5 moles of oxygen.
