Chemistry- Using moles 0.0 / 5 ? ChemistryUsing molesIGCSECIE Created by: KitsuneCreated on: 02-07-16 13:08 What is a mole? The amount that contains the same number of units as the number of carbon atoms in 12 grams of carbon-12 1 of 20 What is the mole equal to? The Avogadro constant 2 of 20 What is the Avogadro constant equal to? 6.02 x 10^23 3 of 20 How to obtain a mole of a substance? Weigh out the molecular or atomic mass 4 of 20 How to find the number of moles? Total mass divided by mass of one mole 5 of 20 What volume does a mole of any gas occupy? 24 cubic dm 6 of 20 What is the gas volume formula? Volume = no of moles x 24 7 of 20 What is the concentration of a solution? The amount of solute in moles or grams, that is dissolved in 1 cubic dm of the solution 8 of 20 How do you call a solution that has only a mole of a substance dissolved in it? Molar solution 9 of 20 What is the concentration formula? Amount of moles divided by volume 10 of 20 What does a formula tell? How many moles of a substance react 11 of 20 What is an empirical formula? It shows the simplest ratio in which the elements combine 12 of 20 How can you know the mass of a substance? By experiment 13 of 20 What can you say about ionic and empirical formulas? They are same 14 of 20 What does the molecular formula show? The actual number of atoms that combine to form a molecule 15 of 20 How to find the molecular formula? Molecular mass divided by empirical mass 16 of 20 What is yield? The amount of product you obtain from a reaction 17 of 20 What is more important than yield? Purity 18 of 20 How to find yield? Actual mass obtained divided by calculated mass multiplied by 100 19 of 20 How to find purity? Mass of pure product divided by total mass of obtained product multiplied by 100 20 of 20
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