#1
What is the definition of stoichiometry?
#2
How many moles are in 36 grams of water (H₂O)?
#3
What is the molar mass of potassium permanganate (KMnO₄)?
#4
In the reaction 2H₂ + O₂ → 2H₂O, what is the stoichiometric coefficient for oxygen (O₂)?
#5
What is the definition of a mole in chemistry?
#6
Which law states that mass is conserved in a chemical reaction?
#7
What is the balanced equation for the combustion of methane (CH₄) in oxygen (O₂)?
#8
What volume of carbon dioxide gas (CO₂) is produced when 100 grams of methane (CH₄) is burned according to the following balanced equation: CH₄ + 2O₂ → CO₂ + 2H₂O? (Assume all gases are at the same temperature and pressure)
#9
What is the limiting reactant when 5 moles of oxygen gas (O₂) react with 3 moles of hydrogen gas (H₂) according to the following balanced equation: 2H₂ + O₂ → 2H₂O?
#10
How many grams of sulfuric acid (H₂SO₄) are required to neutralize 25.0 grams of sodium hydroxide (NaOH) according to the balanced equation: 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O?
#11
How many moles of oxygen gas (O₂) are needed to react completely with 2 moles of hydrogen gas (H₂) according to the balanced equation: 2H₂ + O₂ → 2H₂O?
#12
What is the percentage yield if 25 grams of carbon dioxide (CO₂) are produced according to the reaction: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O, and the actual yield is 20 grams?
#13
A reaction produces 30.0 grams of product according to the balanced equation: 2A + 3B → 2C. If 20.0 grams of A and 30.0 grams of B are used as reactants, what is the percent yield?
#14
What volume of hydrogen gas (H₂) is produced at STP when 5.6 grams of zinc (Zn) reacts with excess hydrochloric acid (HCl) according to the following balanced equation: Zn + 2HCl → ZnCl₂ + H₂?
#15