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Answer on Organic Chemistry Question for chaitanya harsha

Question #14691
1)(a) The smell of a hot sizzling food reaches you from several meters away but to get the smell from cold food you have to go closer? give reason
(b)we can easily move our hand in the air but do the same through a solid block of wood or brick we need a karate expert? give reason
2)(a) calcium hydroxide+carbon dioxide -------->_________________+____________________ ? write the balanced chemical equation
(b)___________+silver nitrate ------------------> zinc nitrate+_________________
(c)__________________+__________________ ------------------------> lead chloride+copper
(d) barium chloride+sodium sulphate ---------> barium sulphate and sodium chloride
3)(a) the atomic mass of the sample of an element x is 16.2u?
(b) what are the percentages of isotopes x 816 and x 818 in the sample?
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