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.
Reactions of acids. Both strong acids and weak acids will react with magnesium or with calcium carbonate. However, the rate of reaction will be different â a strong acid produces a faster reaction than a weak acid at the same concentration.agnesium reacts with acids to produce a magnesium salt and hydrogen: magnesium + hydrochloric acid â magnesium chloride + hydrogen. magnesium + ethanoic acid â magnesium ethanoate + hydrogen. The rate of reaction is determined by measuring the volume of hydrogen produced as the reaction goes on.