test

1. Which of the following samples contains the greatest mass of chlorine?

• 1 atom of chlorine

• 1 mole of chlorine

• 1 gram of chlorine

• 1 molecule of chlorine

Which of the following is the correct unit for molar mass?

• grams

• grams per mole

• moles per gram

• moles

Which best represents the number of moles in exactly 68 grams of carbon?

• 5.7 mol

• 80 mol

• 12 mol

• 68 mol

Which best represents the number of moles in exactly 108 grams of gold?

• 1.10 mol

• 0.548 mol

• 1.37 mol

• 2.74 mol

Which of the following is the measure of concentration, expressed as moles of solute per liter of solution?

• mass percentage

• molality

• mole fraction

Which of the following is the measure of concentration, expressed as the number of moles of a component per the total moles of a solution?

• molarity

• molality

• mole fraction

• mass percentage

How many moles are in a 35 gram sample of N2 gas?

• 1.5 moles

• 2.0 moles

• 1.25 moles

• 1.0 moles

How many moles are in a 66 gram sample of CO2 gas?

• 1.5 moles

• 2.0 moles

• 1.0 moles

• 2.5 moles

The mass of one _________ is the molar mass of the element

• mole of the element

• picogram of the element

• milliliter of the element

• representative particle of the element

The sum of the atomic masses of all the atoms in a formula for a covalent compound is the—

• real mass

• Avogadro mass

• covalent mass

• molecular mass