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Q.give characterstics of matter?
Q.How can we determine Concentrations of Solutions? Ans. The concentration of a solution is the quantitative expression of the amount of solute dissolved in the solution.
Which of the following represents the electronic configuration of an element with atomic number 17: (1) 1s 2, 2s 2 , 2p 6 , 3s 1, 3p 6 (2) 1s 2 , 2s 2 , 2p
Q. What do you mean by Isomers? Ans. Compounds like butane and 2-methylpropane which have the same molecular formula but different molecular structures are called isomers
Q. How to prepare ammonia in industrial level? Ans. Production of Ammonia Ammonia, NH 3 , can be prepared by adding a strong alkali metal (such as sodium) to an ammon
Edible colours - Chemicals in food Edible colours employed for food are mainly dyes. The make use of food dyes is specifically wide spread. They are utilized to colour everythi
what mass of oxygen gas exerts a pressure of 475 mm Hg in a volume of 1.25L at a temperature of -22C
A solution contains an unknown amount of osmium at the µg/g level, or below. Chemically pure osmium (Os) may be separated from the solution, but the chemical yields are variable an
Why is that Li is the only element in group 1A that reacts with dinitrogen to a nitride
The atomic number of an element is 35. What is the total number of electrons present in all the p-orbitals of the ground state atom of that element: (1) 6 (2) 11
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