The per cent loss in mass after heating a pure sample potassium chlorate (molar mass 122.5) will be:
5.6 litre of oxygen at NTP is equivalent to:
Question is mentioned below :
The empirical formula of a compound is CH. Its molar mass is 78. The molecular formula of the compound will be:
The percentage of nitrogen in urea is about:
Which contains greatest number of oxygen atoms?
The mass of an atom of atomic mass 260 amu is:
If a mixture containing 3 moles of hydrogen and 1 mole of nitrogen is converted completely into ammonia, the ratio of initial and final volumes under the same temperature and pressure would be:
The mass of sulphuric acid needed for dissolving 3 g magnesium carbonate is:
The volume of oxygen required for complete oxidation of 2.0 litre methane at NTP is:
