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In one molal solution that contains 0.5 mole of a solute, there is

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Important Questions on Some Basic Concepts of Chemistry

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An organic compound contains 80% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of C is 12 and of H is 1]
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One mole of carbon atom weighs 12g, the number of atoms in it is equal to, (Mass of carbon -12 is 1.9926×10-23g
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The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is:
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In which case the number of molecules of water maximum?
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Suppose the elements X and Y combine to form two compounds XY2 and X3Y2. When 0.1 mole of XY2 weighs 10 g and 0.05 mole of X3Y2 weighs 9 g, the atomic weights of X and Y are
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A mixture of gases contains H2 and O2 gases in the ratio of 1:4 (w/w). What is the molar ratio of the two gases in the mixture?