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Laws Governing Energy Transformations - The storage and expenditure of energy in an ecosystem is in accordance with the laws of thermodynamics (basic laws of thermodynamics). The first law of thermodynamics is the law of conservation of energy, which says that 'energy can neither be creat..

H h y d r a t i o n = - 2760 kJ mol - 1 Net Energy change = - 874 kJ mol - 1 Thus, it is clear that during the formation of MgCl2 in water, more energy is released and accordingly it is more readily formed. 9. What are the factors that govern the solubility of a salt i..

The total number of sublevels or sub-shells possible in each energy level is equal to the numerical value of 'n'. Thus 'n' = 1 energy level can have only one sublevel which is 'l' = 0 or the 's' orbital, 'n' = 2 energy level can have two sublevels corresponding to 'l' = 0 (s) a..

Volume of sulphur dioxide gas = 350 ml at STP Mass of sulphur dioxide gas = 1 g Mass of one mole of sulphur dioxide = x g/mole Volume of 1 mole of sulphur dioxide = 22400 ml at STP Mass : Volume 1 : 350 ml x : 22400 ml Mass of 1 mole of SO 2 = 6..

is a homogeneous mixture of a solute dissolved in a solvent. Examples: Salt and water, sugar and water, iodine and alcohol. It should be remembered that: 1. A Solution is a homogeneous mixture of two or more substances. These substances can be in any of the three phy..

Volume of carbon monoxide = 100 ml Mass of carbon monoxide = 0.125 g Molar volume = 22400 ml Mass of 1 mole of carbon monoxide =? Volume : Mass 100 ml : 0.125 g 22400 ml : x g Mass of one mole of carbon monoxide = 28 g/mole \ Relative molecular mass of carbon monoxide = ..

In the first compound hydrogen = 5.93% Oxygen = (100 -5.93) = 94.07% In the second compound Hydrogen = 11.2% Oxygen = (100 -11.2) = 88.88% In the first compound the number of parts of oxygen that combine with one part by mass of hydrogen In the second compound the number of parts by ma..

Data given: 92.20% of silicon of mass 27.98 amu 4.7% of silicon of mass 28.98 amu 3.1 % of silicon of mass 29.97 amu Average atomic weight = 25.80 + 1.36 + 0.93 = 28.09 amu. Average atomic weight of silicon is 28.09 amu.11. One million silver atoms weigh 1..

The statement A B that every element of A is also in the set B, which includes the possibility that A = B. The statement A B (A is a proper subset of B) that A is a subset of B and A B; hence there exists at least one element in B which is not in A. ..

The law of conservation of energy states that whenever one form of energy is lost, an equivalent amount of energy in another form appears, i.e. the energy is always conserved. If it were so, then there should have been no energy crisis? As our experience is altogether different, the expl..