Number of moles of CO2 present in 24 grams of carbon is
1 mole of CO2 contain 12gms of carbon and 44 gms of CO2
therefore 24 gms of carbon is present in 88 gms of CO2 or 2 moles of CO2
The oxygen liberated during photsynthesis comes from
Which of the following is not a donor atom?
The waste management technique that involves the use of micro-organisms to remove or neutralize pollutants from contaminated site is called
The elements belonging to groups ............ are known as 'd' block elements.
220 g of carbon dioxide contains .......... moles.
A solution contains 42 g of common salt in 320 g of water. Calculate the concentration in terms of mass by mass percentage of the solution?
............ is a purple-coloured solid halogen.
The chemical formula of Ammonium phosphate is ............
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