Equations 0.0 / 5 ? ChemistryChemistry equationsGCSEAQA Created by: KayaBarrowCreated on: 14-04-16 19:06 What is meant by the relative atomic mass of an element? How heavy an atom of an element is compared to an atom of carbon-12. 1 of 6 How do you find out the relative atomic mass? On the periodic table, the bigger number of an element is the relative atomic mass. 2 of 6 How do you find out the relative formula mass of a compound? You add the all of the relative atomic masses together. 3 of 6 How do you find out the number of moles of a substance? Number of moles = mass(in g)/relative formula mass(Mr). 4 of 6 How do you calculate the % mass of an element in a compound? percentage mass of an element in a compound = relative atomic mass(Ar)/relative formula mass(Mr) x 100. 5 of 6 How do you find the empirical formula? 1) List all of the elements in the compound 6 of 6
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