2 Amount of substance 0.0 / 5 ? ChemistryCalculationsASAQA Created by: NaanaCreated on: 25-02-15 11:40 What is relative atomic mass? Average mass of one atom of an element ÷ 1/12th the mass of one atom of carbon 12 1 of 14 What is relative molecular mass? Average mass of one molecule ÷ 1/12th the mass of an atom of carbon 12 2 of 14 What does Avogadro constant mean? The number of atoms in 12g of carbon 12 3 of 14 What is the ideal gas equation? PV=nRT 4 of 14 What are the units for the pressure, volume and temperature in the ideal gas equation? Pressure=Pa, Volume=m, Temperature=K 5 of 14 What is the empirical formula? The simplest whole number ratio in which the atoms of each element present in a compound 6 of 14 What is the molecular formula? The actual number of atoms of each element that make up the compound 7 of 14 How do you find moles using concentration and volume? Moles = concentration (mol dm3) × volume (dm3) 8 of 14 What is the equation used to calculate atom economy? (Mass of useful products ÷mass of all reactants) ×100 9 of 14 How are percentage yields calculated? (Actual yield÷ theoretical yield) ×100 10 of 14 How do you convert degrees into kelvin? Add 273 11 of 14 How do you convert cm3 into dm3? ÷1000 12 of 14 How do you convert cm3 into m3? ÷1000000 13 of 14 How do you convert kPa into Pa? ×1000 14 of 14
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