ratios

What can be calculated using the mole ratio?

• The volume of a gas at STP

• The number of moles of a substance produced or consumed

• The mass of a reactant in grams

• The concentration of a solution in molarity

What can balanced equations be used to describe?

• The physical states of the reactants and products

• The ways in which they can be interpreted

• The speed of the chemical reaction

• The color change during the reaction

What should you be able to review regarding chemical equations after today's lesson?

• The basics of how to balance equations

• The advanced techniques of predicting products

• The methods for calculating reaction enthalpy

• The procedures for conducting experiments

What is the origin of the word "stoichiometry"?

• Latin words: stoicus (meaning "solid") and metrum (meaning "measure")

• Greek words: stoicheion (meaning "element") and metron (meaning "measure")

• French words: stoique (meaning "stoic") and metrie (meaning "measurement")

• German words: stück (meaning "piece") and messen (meaning "to measure")

What is the mass of 1 mole of N2(g) as shown in the balanced chemical equation?

• 28.02 g

• 6.06 g

• 34.08 g

• 9 g

According to the balanced chemical equation, what is the mass of 3 moles of H2(g)?

• 28.02 g

• 6.06 g

• 34.08 g

• 9 g

What is the total mass of the reactants in the balanced chemical equation?

• 28.02 g

• 6.06 g

• 34.08 g

• 34.08 g

What is the mass of 2 moles of NH3(g) as indicated in the balanced chemical equation?

• 28.02 g

• 6.06 g

• 34.08 g

• 17.04 g

What is the mole ratio of N₂ to NH₃ in the reaction provided?

• 1:1

• 1:2

• 1:3

• 2:3

If 3 moles of H₂ are used in the reaction, how many moles of NH₃ will be produced?

• 1 mole NH₃

• 2 moles NH₃

• 3 moles NH₃

• 6 moles NH₃