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explain the law of chemical combination
The radius of first Bohr's orbit for hydrogen is 0.53 Å. The radius of third Bohr's orbit would be: (1) 0.79 Å (2) 1.59 Å (3) 3.18 Å (4)4.77 Å
Determine the molality of an aqueous solution that is 12.0 percent urea by mass
zinc+copper(ll) chloride
Decomposition Metal Hydrogen Carbonate Cu(HCO 3 ) 2 . Decomposition Metal Hydrogen Carbonate
Q. What are boiler troubles? Discuss their consequences? Sol. Boiler feed water (water for steam making): water is very important engineering material which is mainly used fo
what is hydrogen?
Q. What is Oxidation Numbers? Ans. Chemists find it useful to describe the oxidation states of an element by means of oxidation numbers. The oxidation number of an element
The pH scale: The equation: p Kw =14.00=pH+pOH is obtained by taking the negative logarithm to the base 10 of the autoprotolysis equation, where In general pX denotes -
If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e [ (n 2- n 1 +1)
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