homework
Silicon has three naturally occurring isotopes. 28Si, mass = 27.976927; 29Si, mass = 28.976495; 30Si, mass = 29.973770 and 3.10% abundance. What is the abundance of 28Si?
parachloroaniline is strong base than paranitroaniline
The following mixture of hydrocarbons is obtained as one stream in a petroleum refinery. Q : Problem on moles of solution The number The number of moles of a solute in its solution is 20 and total no. of moles are 80. The mole fraction of solute wil be: (a) 2.5 (b) 0.25 (c) 1 (d) 0.75
The number of moles of a solute in its solution is 20 and total no. of moles are 80. The mole fraction of solute wil be: (a) 2.5 (b) 0.25 (c) 1 (d) 0.75
Unit of measurement- These are also some systems for units: (1) C.G.S.
brief discription of relative lowering of vapour pressure
Explain what is octet rule in chemistry?
It may be prepared by the action of phosphorus on thionyl chloride.P4 + 8SOCl2 4
Briefly state the pH of an Alkyl Halide?
give all physical aspects in the production of alcohol
Give me answer of this question. The vapour pressure of water at 20degreeC is 17.54 mm. When 20g of a non-ionic, substance is dissolved in 100g of water, the vapour pressure is lowered by 0.30 mm. What is the molecular weight of the substances: (a) 210.2 (b) 206.88
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