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The energy that opposes dissolution of a solvent is:
(1) Hydration energy
(2) Lattice energy
(3) Internal energy
(4) Bond energy
Ans: Bond energy
Alkaline earth metals: The elements Be, Mg, Ca, Sr, Ba and Ra belong to II A group. 2. II A group elements are also called alkaline earth metals. 3. The valence electron
Q. Determine the acid value and free fatty acids? This activity will help you to: • know the acidity in given sample of fat/oil, and • determine the free fatty acid com
The difference in the mass of 100 moles of sodium atoms and sodium ions is 5.48002grams .compute the mass of an electron
if the electon in hydrogen atom is exited to n=5 the number of diffrent frequency of radiations which may be exited is
Cast iron is iron or a ferrous alloy which has been heated until it liquefies, and is then poured into a mould to solidify. It is usually made from pig iron. The alloy constituents
A 75g piece of Ag is heated to 80 degree celcius and drooped into 50g of water at 23.2 degree celcius.The final tempereture of Ag-H2O mixture is 27.6degree celcius.what is the spec
The minimum amount of energy needed for the reaction to takes place is known as threshold energy.
properties and effects
copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula o
How long would it take to consume 13mg of Mg in 4.2mL of 1.25M HCl?
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