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A mixture of potassium nitrate and sulfur reacts according to the following balanced equation
(2016)
Consider the three gaseous hydrides NH3, PH3 and AsH
Environmental scientists continue to be concerned about the slow recovery of ozone concentrations in the stratosphere despite the successes of the 1987 Montreal Protocol, an international treaty designed to control substances that deplete ozone.
The diagram shows a Downs cell used to electrolyse molten sodium chloride
A solution of (NH4)2SO4·FeSO4·6H2O (hydrated ammonium iron(II) sulfate), used as a primary standard, was prepared by dissolving 8.82 g of the crystals in dilute sulfuric acid and making the solution up to exactly 250 cm3 with deionised water
(2017)
