Final Review

Front

What type of bond is present in Solid X and Solid Y if Solid X contains only ionic bonds and Solid Y contains only covalent bonds?

Back

Solid X contains ionic bonds, and Solid Y contains covalent bonds.

Front

What is the relationship between pressure, volume, and temperature of a gas as described by the ideal gas law?

Back

The ideal gas law states that PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature in Kelvin.

Front

How do you calculate the percent by mass of an element in a compound?

Back

Percent by mass = (mass of element in 1 mole of compound / molar mass of compound) x 100%.

Front

What is the name of the compound CoF3?

Back

Cobalt(III) fluoride.

Front

How do you find the mass of a gas given the number of moles?

Back

Mass = number of moles x molar mass.

Front

What is the molar mass of oxygen gas (O2)?

Back

32.0 g/mol.

Front

What happens to the volume of a gas when the pressure increases, assuming temperature is constant?

Back

The volume decreases, according to Boyle's Law.

Front

What is Boyle's Law?

Back

Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature.

Front

What is the formula for calculating the volume of a gas when pressure and temperature change?

Back

Use the combined gas law: (P1V1)/T1 = (P2V2)/T2.

Front

What is the significance of the coefficients in a balanced chemical equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.