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The color in KMnO4 arises from an electronic transition, but it is actually not a d-d ... When the light is reflected (or transmitted) it is missing the frequencies of the light absorbed, and so it looks pink.
why L-glucose not used in lab
Analysis of oils and fats - Acid value It points out the amount of free acid present in the oil or fat. It is described as the number of milligrams of KOH needed to neutralize
You may have eaten "astronaut ice cream" as a kid at a science museum or planetarium to experience the type of food eaten by astronauts. Astronaut ice cream is made by chilling the
what will be presure if tempreture is -73?
convert km to m
how do you calculate the concentration of hcl solution if you are the mass of sodium carbonate and the volume of its solution and the volume of the pipetted solution and the volume
diamond is covalent.yet it has high melting point.why?
Q. What is Activation Energy? Ans. Colliding molecules which overcome the activation energy form an activated complex. In the activated complex, original bonds are partial
An unknown amount of copper, at 95 degrees C,, is placed in 100 g of water at 20 degrees C. It reaches temperature equilibrium at 60 degrees C. What is the mass of the copper?
The enthalpy change (ΔH) in a reaction is equal to the heat input under conditions of constant pressure and temperature. It is not equal to the total energy change, as work may be
Mostly compounds of d block elements exibitcolour dueto d-d transistions between partially filled eg and t2gbut the reason for colour of KmnO4 and K2Cr2O7 is due to partial chanrge transfer between central atom and oxygen which causes colour
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