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प्रश्न
Find the weight of 0.5 mole of O2.
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उत्तर
Weight of 1 mole of O2 = 16 g × 2 = 32 g
∴ Weight of 0.5 mole = 32 × 0.5 = 16 g
संबंधित प्रश्न
Define the term:
Vapour density
Fill in the blank.
Molecular weight of a gas is twice its __________.
Calculate the percentage of water in ferrous sulphate crystals.
[Fe = 56, S = 32, O =16, H = 1].
Calculate the percentage of boron (B) in borax (Na2B4O7.10H2O). [H = 1, B = 11, O = 16, Na = 23],
answer correct to 1 decimal place.
Washing soda has the formula Na2CO3.10H2O.What is the mass of anhydrous sodium carbonate left when all the water of crystallization is expelled by heating 57.2 g of washing soda?
Calculate the percentage of sodium in sodium aluminium fluoride (Na3AIF6).
[F = 19, Na = 23, Al = 27]
The equation for the burning of octane is:
\[\ce{2C6H18 + 25O2 -> 16CO2 + 18H2O}\]
If the relative molecular mass of carbon dioxide is 44, what is the mass of carbon dioxide produced by burning two moles of octane?
Calculate the relative molecular mass of:
Ammonium chloroplatinate (NH4)2 PtCl6
Calculate the relative molecular mass of:
Potassium chlorate
What do you understand by the statement that ‘vapour density of carbon dioxide is 22’?
