Front

What is a mole ratio?

Back

A mole ratio is a ratio that relates the amounts in moles of any two compounds involved in a chemical reaction, derived from the coefficients of a balanced chemical equation.

Front

How do you determine the mole ratio from a balanced equation?

Back

The mole ratio is determined by the coefficients of the reactants and products in a balanced chemical equation.

Front

What is the mole ratio of Ba(OH)₂ to AlPO₄ in the reaction 2AlPO₄ + 3Ba(OH)₂ → 2Al(OH)₃ + Ba₃(PO₄)₂?

Back

3 mol Ba(OH)₂ / 2 mol AlPO₄.

Front

What is the significance of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the law of conservation of mass is followed, meaning the number of atoms of each element is the same on both sides of the equation.

Front

What does the activity series indicate?

Back

The activity series is a list of metals arranged in order of decreasing reactivity, used to predict whether a particular reaction will occur.

Front

Will the reaction bromine + potassium iodide occur?

Back

Yes, based on the activity series, bromine can displace iodide.

Front

How do you balance the reaction C₅H₁₄ + O₂ → CO₂ + H₂O?

Back

The balanced equation is 2 C₅H₁₄ + 17 O₂ → 10 CO₂ + 14 H₂O.

Front

What is the total number of moles of Na₂S produced from 8.0 moles of Na in the reaction 2Na + S → Na₂S?

Back

4 moles of Na₂S are produced.

Front

What is the purpose of coefficients in a chemical equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction and are essential for calculating mole ratios.

Front

Define molar mass.

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).