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level: Moles

Questions and Answers List

level questions: Moles

QuestionAnswer
What are molesA measure of chemical amounts
What is the avogadro number1 mole of any substance = 6.02x10^23
RFM and moleThe RFM of a substance is equal to 1 mole of that substance
Equation for molesmass/RFM
What is a limiting reactantThe reactant that is completely used up because the reaction stops when its used up
How do we make sure that no acid remains after a chemical reactionan excess amount of other reactant
How do we calculate the number of moles when a substance is dissolved in solutionWe use the solutions concentration
What are the two different units when we measure concentration and how do we het them1) Grams per decimetre cubed - mass/volume 2) Moles per decimetre cubed - moles/volume
How do you work out percentage yeildActual yeild/theoretical yeild
How do you work out atom economyMr of atoms of products/mr of reactants