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Q. What do you mean by Rounding off numbers?
Rounding off numbers while you report a calculation your answer should have no more significant figures than the piece of data you used in your computation with the fewest number of significant figures. Therefore if you calculate the density of an object with a mass of 12.33 g in addition to a volume of 19.1 cm3 your answer must have only three significant figures. Though when you divide these quantities using your calculator it will show 0.6455497-lots more figures than you can report in your answer. You must round off the number to three significant figures or 0.646.
when n why rearrangement reaction occur?//
you are provided with a monobasic acid , HX with a concentration in the range of 0.5moldm-3. You arerequired to plan and carry out an experiment to determine that exact concentrati
Limitations of second law of thermodynamics
Physical Properties of benzene (a) First property of Benzene is that it is a colourless, mobile and volatile liquid. Its boiling point is 80°C and freezing point is 5.5°C. It c
Q. How can we obtain Pure alumina? Pure alumina is obtained from bauxite ore. Powdered bauxite mineral is heated in a concentrated solution of sodium hydroxide under pressure w
Q. Evaluate precentage Proteins in Milk ? Milk comprises of casein, lactoalbumins and lactoglobulins. About 82 per cent of the protein in milk is casein and the remaining prot
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explain the construction of calomel electrode.explain how this electrode is used to determine the potential of an unknown electrode
what is the advantag of reversible reaction?
Conditions which a dye must satisfy and describe them
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