general chemistry help high school

Oxidising Power of Halogens - Halogens have high electron affinity values and therefore they have strong tendency to take up the electro..

As we move down a group the atomic size and nuclear size increases. As the effect of increase in atomic size is more pronounced the additional electron feels less attracted by the large atom. Consequently the electron affinity decreases. However there are some irregularities observed in the above ..

. In the ECS, Li system has the lowest SRP and is highly electro positive which goes on decreasing down the series. 5) A metal system occurring above H 2 , displaces H 2 from dilute acids, from water steam depending on its position and gets tarnished. 6) A metal system occurring below H 2..

. In the ECS, Li system has the lowest SRP and is highly electro positive which goes on decreasing down the series. 5) A metal system occurring above H 2 , displaces H 2 from dilute acids, from water steam depending on its position and gets tarnished. 6) A metal system occurring below H 2..

The controlled combustion of fuel in the presence of air, gives an internal combustion engine its power. A low quality fuel does not burn smoothly and causes an occasional explosive sound, which is known as knocking. This greatly reduces the power of the engine. The quality of a fuel is indicated ..

Measurement of Enthalpy of Reactions - The heat changes in chemical reactions are measured with the help of calorimeters. Depending upon the requirements of experiments different types of calorimeters are used. In general, reactions taking place at constant volume and involving ..

. By supplying enough energy, it is possible to remove an electron from an atom. The element is first brought into the vapour state. Then the electron is removed by supplying energy equivalent to the ionization potential. In referring to the Periodic table of ionisation potentials (in electron volt..

Energy for life processes basically comes from the sun. During photosynthesis, green plants absorb energy from the sun to make glucose and oxygen from carbon dioxide and water. Photosynthesis is a complex process which occurs in a sequence of steps leading to the net reactio..

Zeolites are microporous aluminosilicates of general formula M x / n [AlO 2 ] x [SiO 2 ].mH 2 O and may be considered as open structures of silica in which aluminium has been substituted in a fraction x / (x+y) of the tetrahedral sites. The negative charge of the aluminosilicate framework..

Zeolites - Zeolites are microporous aluminosilicates of general formula M x / n [AlO 2 ] x [SiO 2 ].mH 2 O and may be considered as open structures of silica in which aluminium has been substituted in a fraction x / (x+y) of the tetrahedral sites. The negative charge of the aluminosilicat..