ACE OpenStax Chapter 3 Test

Front

What is molarity?

Back

Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution.

Front

How do you calculate the volume of a diluted solution?

Back

Use the formula: C1V1 = C2V2, where C1 and V1 are the concentration and volume of the concentrated solution, and C2 and V2 are the concentration and volume of the diluted solution.

Front

What is the relationship between moles and molecules?

Back

1 mole of any substance contains Avogadro's number of molecules, which is approximately 6.022 x 10^23.

Front

What is the molar mass of a compound?

Back

The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in the molecule.

Front

How do you convert atoms to moles?

Back

To convert atoms to moles, divide the number of atoms by Avogadro's number (6.022 x 10^23).

Front

What is the formula for calculating the number of molecules in a given number of moles?

Back

Number of molecules = moles x Avogadro's number (6.022 x 10^23).

Front

What does dimensional analysis involve?

Back

Dimensional analysis is a method used to convert units by multiplying by conversion factors that relate different units.

Front

What is the significance of concentration in solutions?

Back

Concentration indicates how much solute is present in a given volume of solvent, affecting the solution's properties and behavior.

Front

How do you determine which solution is the sweetest based on concentration?

Back

The sweetness of a solution is directly related to its concentration; the higher the molarity, the sweeter the solution.

Front

What is the formula for calculating molarity?

Back

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