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Diagram A shows an arrangement used to reflux the reaction mixture in an experiment to prepare a sample of soap.
(2018)
The cardboard cup with plastic lid in the diagram contained 150 cm3 of 1.0 M hydrochloric acid solution at room temperature
What was the purpose of Millikan’s ‘oil drop’ experiments of 1908 to 1913?
Define (i) mass number of an atom, (ii) relative atomic mass of an element.
Refinery gas, naphtha, kerosene and gas oil are products of the fractionation of crude oil.
