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a student prepared a solution of sodium carbonate by 2.111g of the solid to a 250.0ml volumentric flask and adding H2O to the mark.Some of this solution was transferred to a burett
why are lanthanides and actinides called innertransition metals
Q. Show Occurrence Extraction of group 16? Oxygen is the most abundant of all elements on earth. Dry air contains 20.946% oxygen by volume in the free form. Oxygen forms about
Chemistry in action - Antiseptics The chemical substances that are utilized to kill or avoid the growth of micro-organisms are known as antiseptics. These are not harmful to li
The nitrogen atom has 7 protons and 7 electrons, the nitride ion (N 3 -) will have: (1) 7 protons and 10 electrons (2) 4 protons and 7 electrons (3) 4 protons and 10 e
Q. Show the techniques of preservation? The various methods can be used for preservation of foods. Some of the common methods employed to preserve foods are summarized herew
what is P and N junction
Soaps and detergents Sodium and pottasium salts of fatty acids such as palmitic acid, stearic acid, oleic acid etc are called soaps, while detergents are ammonium or sulphonate
Q. What do you mean by Blanching? The enzymes in the food system can be separated into four groups relating to the changes in flavour, colour, texture and nutritive value. T
A student wishes to prepare 250ml of a 0.20mol/L solution of oxalic acid (COOH)2.2H2O. a) Calculate the amount (no.of moles) of oxalic acid required. b) Calculate the mass of oxali
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