Module 2 Section 2: Formulas and Equations 0.0 / 5 ? ChemistryModule 2A2/A-levelOCR Created by: IleeCreated on: 22-11-18 02:12 What does the empirical formula of a compound tell you? The empirical formula gives the smallest whole number ration of atoms of each element in a compound 1 of 7 What does the molecular formula of a compound tell you? The molecular formula gives the actual numbers of atoms of each type of element in a molecule 2 of 7 What equation links the number of moles of a substance to its mass and molecular formula? Moles = mass ÷ mr 3 of 7 What is meant by the percentage composition of a compound? The percentage composition tells you what percentage of the mass of the ompound is made up of each element 4 of 7 What charge do the ions formed by group 1 elements have? +1 5 of 7 Which elements does the carbonate ion contain? Carbon and oxygen 6 of 7 What is the charge on a silver ion? +1 7 of 7
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