amount of substance 2.1-2.5 3.5 / 5 based on 2 ratings ? ChemistryCalculationsA2/A-levelAQA Created by: joelt2503Created on: 07-11-16 20:16 what is relative atomic mass? The mass of an atom of an element compared to one-twelfth(1/12) the mass of an atom of carbon-12 1 of 12 what is relative molecular mass? The mass of a molecule of a molecule compared to one-twelfth(1/12) the mass of an atom of carbon-12 2 of 12 how do you find out the no. of moles in a mass of substance? no. of moles = mass (g) / molar mass (g/mol) 3 of 12 how can you find the concentration (mol dm-3) of a solution using moles and volume? moles / Volume (dm3) 4 of 12 how do you convert from cm3 to dm3? you divide by 1000 (and vice versa) 5 of 12 what is the ideal gas equation? Pv =nRT 6 of 12 what does P stand for in the ideal gas equation and what are its units? Pressure in paschals (Pa) 7 of 12 what does v stand for in the ideal gas equation and what are its units? Volume in m3 8 of 12 what does n stand for in the ideal gas equation? moles of substance 9 of 12 what is R in the ideal gas equation it is a constant of 8.31J/K/mol 10 of 12 what is the empirical formula? the formula that represents the simplest whole number ratio of atoms of each element present in a compound 11 of 12 what is T in the ideal gas equation? what are its units ? how can you get to this unit from celsius? temperature in kelvin (K). K = C + 273 12 of 12
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