On-line GCSE chemical calculations Quiz 5. Working out simple empirical formula from reacting masses

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Type in formula and click CHECK. The formula must entered as a string of characters - no subscripts e.g. Na2SO4 would be entered as Na2SO4 - if correct, the feedback will sort it out!  Get the character case correct for element symbols correct e.g. for sodium, Na, NOT NA , na or nA. Its IMPORTANT - enter the elements in the formula in the same order as the atomic masses are given in (). Sorry - last feedback is left on screen. All GCSE Chemistry, Earth Science and Radioactivity Quizzes "Doc Brown's Chemistry Clinic" EMAIL query?comment, quote Q ref [emp-xx]) (01-06-09)


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