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Given the following mass percent compositions, determine the empirical formula:
49.5% C; 5.2% H; 28.8% N; 16.5% O.
what is colloids
a metal forms 2 oxides. the higher oxide has 80% metal. 0.72g of lower oxide gave 0.8g of higher oxide when oxidised. show that law of multiple proportion is valid?
Covalent Bond Purely electrostatic attractions between ions are nondirectional, but with increasing covalent character the directional properties of valence orbitals become more
The shape of an orbital is given by the quantum number : (1) n (2) l (3) m (4) s Ans: l
i have very problem
discuss in detail the basic principle and instrumentation involved in fluorimetry and phosphorimetry
What r the requirements for a good refractory material
Shielding of proton by electrons
Why rate of reaction in zero order is independent of concentration? Solution) Where r is the reaction rate and k is the reaction rate coefficient with units of time / concentrat
Q. The pressure in a liquid droplet of radius r is greater than the pressure of the surrounding equilibrated gas phase by a quantity 2 =r, where is the surface tension. (a) Cons
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