Mole Mastery Study Guide

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A quick mole concept refresher.

Stacey Stallings

Estados Unidos

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Mole Mastery Study Guide


Mole Mastery Study GuideVersión en línea A quick mole concept refresher. por Stacey Stallings 1 What is the mole a counting unit for in chemistry? a Energy units b Liters of gas c Color intensity d Particles (atoms, ions, molecules) 2 What is Avogadro's number? a 6.022 × 10^23 b 1.00 × 10^23 c 3.14 × 10^23 d 6.022 × 10^20 3 Which quantity relates mass to moles via molar mass? a Moles = mass × density b Moles = volume × molar mass c Moles = mass / molar mass d Moles = volume / molar mass 4 How many grams are in 1 mole of carbon-12? a 12.00 g b 1.20 g c 6.02 g d 24.00 g 5 What is the molar mass of H2O (approx.) in g/mol? a 12.01 g/mol b 18.02 g/mol c 28.97 g/mol d 36.04 g/mol 6 Which conversion converts grams to moles? a Divide by Avogadro's number b Divide by molar mass c Multiply by density d Add molar volume 7 What is the mole ratio in 2 H2 + O2 → 2 H2O? a 1:1:1 b 2:2:1 c 1:2:2 d 2:1:2 8 Which factor does not change the mole ratio in a reaction? a Amount of reactants b Reaction stoichiometry c Temperature influencing rate constants d Amount of solvent 9 What does a limiting reactant determine in a reaction? a The maximum product formed b The solvent volume c The total reaction time d The equilibrium constant 10 If 3.0 g of H2 reacts with excess O2, how many moles of H2O can form (M(H2)=2.02 g/mol)? a 0.745 moles of H2O b 1.50 moles of H2O c 0.150 moles of H2O d 2.23 moles of H2O