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Gold has a molar mass of 197g/mol. How many atoms are in the sample?Please give me procedure also. Ans) molecular wieght of gold is 197 g 1mole/g of molecule is occupies t
perkin ring closure reaction of melonic ester with C2H5O-Na+
calculate the enthalpy of combustion for acetic acid using standard enthalpies of formation
calculate the electrode potential of a platinum electrode immersed in a solution containing Ce4 + ions (cCe4 + = 0.05M) and Ce3 + ions (cCe3 + = 0.1M)
Q. Describe about groups or families in periodic table? Every element may be represented by a one or two letter symbol. In the middle of nineteenth century a Russian chemist Dm
what is lowest number rule?
mention the basic tendency of an atom which makes it to combine with other atoms.
Question: Steam initially in a vapor/liquid mixture with 80 percent liquid at 250C, expands isothermally and reversibly to a final state at 20 bar. Using the steam tables: a
freon preparation
what techniques can you use to separate solute from liquid
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