Practice AC Final Number 2

Front

What is the balanced chemical equation for the reaction between chlorine and potassium bromide?

Back

Cl₂ + 2 KBr → Br₂ + 2 KCl

Front

How do you calculate the molarity of a solution?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What is the molar mass of sugar (C₁₂H₂₂O₁₁)?

Back

The molar mass is 342.30 g/mol.

Front

What is the definition of a sigma bond?

Back

A sigma bond is a type of covalent bond formed by the direct overlap of atomic orbitals.

Front

What is the definition of a pi bond?

Back

A pi bond is a type of covalent bond formed by the sideways overlap of p orbitals.

Front

How do you find the partial pressure of a gas in a mixture?

Back

Partial pressure = (mole fraction of gas) × (total pressure).

Front

What is the total pressure of a gas mixture if the partial pressures are 200 mm Hg, 250 mm Hg, and 300 mm Hg?

Back

Total pressure = 200 mm Hg + 250 mm Hg + 300 mm Hg = 750 mm Hg.

Front

What is the definition of an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the definition of a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is the definition of a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded.