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Where is tin obtained?
Ans) Tin is obtained in several places tin is found mainly in the ore cassiterite, which is originate in Malaysia, Bolivia, Thailand, and Nigeria.
name given to substance combination
If the density of a substance is 7.99 g/mL. What is the mass of 3.60 mL of this substance?
why is the valence electron 4s2 in the elelment Sc21 and not 3d1?
How viscosity and surface tension help in ascertaining criteria of purity for organic compounds
Bond formed in crystal by anion and cation is: (1) Ionic (2) Metallic (3) Covalent (4) Dipole Ans: Ionic
examples of spd arrangement
Q. Explain Le Chtelier's Principle Ans. Consider the equilibrium reaction of: A + B -> C + D The forward reaction occurs when A and B combine to form C and D: A +
descibe mucopolysaccharide and its biological importance
The energy of an electron in orbit of hydrogen atom is : (1) 13.6/n 4 x eV (2) 13.6/n 3 xeV (3) 13.6/n 2 xeV (4)13.6/nx eV Ans:
Q. Define the Planck constant? The energy of a photon ( E photon) of a certain frequency (violet) is able to be calculated by using the following equation in which h represen
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