positive energy solutions

Kinetic energy of the body = 0 (Since the body is at rest, i.e., v = 0) Potential energy of the body = mgh. Therefore the total mechanical energy = mgh + 0 = ..

These types of solutions where D H of mixing is >0 and D V of mixing >0 are found to exhibit positive deviation from Raoult's law. Here solute-solute interactions and solvent-solvent interactions are greater than solute - solvent interactions. fig.3.7 C..

Nuclear Energy and Chemical Energy - Nuclear energy is released when very small particles of matter split or combine. After the split or combination, they result in small particles or heavy particle. The rest of the mass is changed into energy. This process o..

When the body is at position C, its height above the ground may be regarded as zero. Therefore, potential energy of the body = 0. If v c is the velocity with which the body touches the ground, then v c 2 - 0 = 2gh v c 2 = 2gh Total energy of the body = mgh F..

Solubility of a salt in water depends on Lattice energy versus hydration energy Lattice energy (amount of energy required to break one mole of a solid salt into its ions). Greater the lattice energy, more will be the energy required to ..

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'..

When a liquid is heated, the heat supplied is consumed to pull the liquid molecules apart against strong attractive forces, which hold them together in the liquid form. The heat energy goes to compensate the loss of energy due to escaping molecules, which have to overcome the a..

Graph (i) represents two different positions of the particle at the same instant of time t. This is not possible. Graph (iii) is the only graph which illustrates one dimensional motion of a particle starting from rest and moving along a straight line with increasing velocity...

The electronic configuration of nitrogen (1s 2 2s 2 2p 3 ) shows that it possesses exactly half-filled 'p' orbitals as its outershell configurations. Since, half-filled orbitals are extraordinarily stable, it is more difficult to remove an electron from this atom. Thus nitrogen has unexpectedly hi..

In NF 3 nitrogen involves sp 3 hybridisation and one position is occupied by a lone pair. Therefore the molecule is pyramidal. But in BF 3 , B involves sp 2 hybridisation having triangular planer geometry...