A good contract bookkeeper is able to: 1  Set up accounting systems and software properly. 2  Enter transactions. 3  Perform checks, reconciliations and end of year processes.  Ensure they are up to speed with legislative requirements and management 1  reports. Undertake payroll duties and compliance.
An active metal is a metal that displaces hydrogen from an acid. Examples of active metals include magnesium, zinc and iron. This type of reaction is also called a single displacement reaction where the active metal 'displaces' the hydrogen from the acid. Examples of reactions involving acids and active metals. 1  Hydrochloric acid + Magnesium â Magnesium chloride + Hydrogen.
Here are some examples of acid metal chemical reactions: 1  Magnesium + hydrochloric acid = magnesium chloride + hydrogen gas (Mg + 2HCl = MgCl2 + H2) 2  Magnesium + sulphuric acid = magnesium sulphate + hydrogen (Mg + H2SO4 = MgSO4 + H2) 3  Iron + sulfuric acid = iron sulfate + hydrogen (Fe + H2SO4 = FeSO4 + H2)