ASSIGNMENT-2 Magnesium carbonate, MgCo, is a tablet used to relieve symptoms of overproduction of gastric acid in the stomach. Gastric acid contains hydrochloric acid. 100 cm of 0.155 mol/dm of hydrochloric acid is neutralised by the tablet. The balanced equation for the reaction between MgCo, and HCl is: MgCo, + 2HCI MgCl, + H2O + CO2 3 a) Convert 100 cm to dm. 1000 cm3 FOOO o.1 dm3 am3 [1] . b) Calculate the number of moles in 0.155 mol/dm3 of HCl

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

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