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2 Kg of ice at -20 degree C is mixed with 5Kg of water 20 degree C in an insulating vessel containing negligible heat capacity. Measure the final mass of water remaining in the con
Disinfectants: The chemical substances that are employed to kill microorganisms although they cannot be applied on living tissues are known as disinfectants. Hence, disinfectan
Q. Explain the use Radioactive Nuclides? Ans. Radioactive elements are easily found because they emit radiation. They can be used as tracers to show what is happening in
Which one pair of atoms or ions will have same configuration: (1) F + ans Ne (2) Li + He - (3) C l - and Ar (4) Na and K Ans: Cl - an
list down all the chemical properties of s- block?
Pka
Q. What is the basic structure of Alkynes? Ans. Alcohols have the general chemical formula of ROH. The R stands for the rest of the molecule and is usually an alkyl group
You are given a sample block of an unknown metal. The block displaces 3.24 mL of water and has a mass of 62.5429 g. What is the density of the unknown metal? What is the metal?
Question 1: (i) With the aid of a diagram, briefly explain the natural environmental system. (ii) Explain the green house effect, and give 2 examples of green house gases
Explain ,Why NH 4 + ion doesnot form complexes? solution) NH 4 + Ion does not act as ligand because nitrogen atom has no lone pair of electrons which it can donate to metal a
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