Calculations 0.0 / 5 ChemistryCalculationsASAQA Created by: Joseph FurnivalCreated on: 05-03-18 08:45 The mole is the amount of substance in grams that has the same number of particles as there are atoms in 12g of carbon-12 1 of 23 Relative atomic mass Average mass of one atom compared to one twelfth the mass of a carbon 12 atom 2 of 23 Relative molecular mass is the average mass of a molecule compared to one twelfth the mass of a carbon 12 atom 3 of 23 moles calculation mass/mr 4 of 23 ideal gas equation PV=nRT 5 of 23 what is volume measured in in gases m^3 6 of 23 concentration formula moles/volume or conc x volume 7 of 23 what is volume measured in in a solution dm^3 8 of 23 Avogadros constant The amount of substance in grams is equal to the same number of particles there are in carbon 12. the number is 6.022 x 10^23 9 of 23 How do you work out number of particles moles of substance x avogadros number 10 of 23 equation for density mass/volume 11 of 23 What is empirical formulae The simplest ratio of atoms of each element in a compound 12 of 23 Na2SO4 . xH2O has a molar mass of 322.1, Calculate the value of x 322.1-(23 x 2 +32.1 + 16 x 4) 180/18=10 13 of 23 mass concentration equation mass/volume 14 of 23 what is the unit of mass concentration g/dm^3 15 of 23 calculating dilutions original concentration x original volume/new diluted volume 16 of 23 percentage yield actual yield/ theoretical yield x 100 17 of 23 percentage atom economy mass of useful products/ mass of all reactants x 100 18 of 23 uncertainty uncertainty/measurement made on uncetainty x 100 19 of 23 how do you convert cm3 into dm3 divide by 1000 20 of 23 how do you convert cm3 to m3 divide by 1000000 21 of 23 how do you convert dm3 to m3 divide by 1000 22 of 23 how do you convert degrees to kelvin add 273 23 of 23

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