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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.
a) Give a chemical test to distinguish between aniline and N-methyl aniline. Draw the structure of XeF2 molecule. b. Write the outer electronic configuration of Cr atom (Z =
Which of the following rate equations is correct, if the hydrogenation of the adsorbed intermediate is the slowest step of the reaction? When zinc oxide is used as
Q. Name the plant based sources of antioxidants? Name the plant based sources of the following antioxidants: Vitamin C, lycopene, isoflavones and organo sulphur compounds.
Cellulose - Biomolecules Cellulose is found in all plants and thus is the most abundant of all carbohydrates. It is the substance required to form cell walls and another struct
Equation shows the combustion of methane. a. By analogy, write a similar chemical equation using ethane, C 2 H 6 . b. Show this equation with Lewis structures. Answer:
explain the mechanism
Complexes of actinides
v CO has same electrons as or the ion that is isoelectronic with co is
why pcl3 and s2cl2 are less polar then sicl4
interpertation of dta
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