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what is fractional distillation
Each element has a unique number of protons. This unique number is known as the element's atomic number . All atoms of a given element have the same atomic number. For example:
Q. Describe SI System and Standards Ans: What units you will you use science class? Long ago people decided that the "foot" must be standardized so that when I measure
Sodium alkyl benzene sulphonates Sodium p-dodecyl benzene sulphonate abbreviated as S.D.S. work as a good detergent. It is most broadly used since 1975. These long chai
A solvated electron is a free electron in (solvated in) a solution, and is the least possible anion. Solvated electrons happen widely although they are often not practical directly
why f elememnts kept sepertaly in periodic table
what is ionisation energy
formula of acetic acid
Q. What are the requirements of drinking water? Explain various methods used for the sterilization of water for municipal supply. ANS. Requirements of drinking water: The e
Crystals and glasses Unlike a complex ion or molecule, which is a finite (often small) assembly of atoms, a solid has no fixed shape and size but can add atoms indefinit
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