normality
how 0.5N HCL is prepared for 10 littre solution
6. 20 gm of hydrogen is present in 5 litre vessel. The molar concentration of hydrogen is
Choose the right answer from following. The relative lowering of vapour pressure produced by dissolving 71.5 g of a substance in 1000 g of water is 0.00713. The molecular weight of the substance will be: (a) 18.0 (b) 342 (c) 60 (d) 180
Elaborate a dipole moment?
Two tanks which contain water are connected to each other through a valve. The initial conditions are as shown (at equilibrium):
Write a short note to describe how to test a gas to see if it was hydrogen or not?
Group 16 of periodic
Choose the right answer from following. Which one of the following is an extensive property: (a) Molar volume (b) Molarity (c) Number of moles (d) Mole fraction
Which ion has the lowest radius from the following ions(a) Na+ (b) Mg2+ (c) Al3+ (d) Si4+ Answer: (d) All are the iso-electronic species but Si
Differentiate between the modern periodic table and Mendeleevs table?
During the formation of polymers, different macromolecules have different degree of polymerisation i.e. they have varied chain lengths. Thus, the molecular masses of the individual macromolecules in a particular sample of the polymer are different. Hence, an average value of the molecular mass is
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