1.1 Moles and Molar Mass

    Cards (36)

    • One mole of a substance contains 6.022 × 10²³ particles
    • The mole is defined as the amount of a substance that contains 6.022 × 10²³ particles
    • The molar mass of a substance is expressed in grams per mole
    • Steps to calculate molar mass using the periodic table
      1️⃣ Identify the elements
      2️⃣ Find atomic masses
      3️⃣ Add atomic masses
    • What is the value of Avogadro's number?
      6.022 × 10²³
    • What is the unit of molar mass?
      grams per mole
    • What is the molar mass of a substance if 2 moles weigh 88.02 grams?
      44.01 g/mol
    • What is the atomic mass of carbon?
      12.01 g/mol
    • What is the formula to convert grams to moles?
      Moles = Grams / Molar Mass
    • Convert 50 grams of CO₂ to moles.
      1.136 moles
    • What does the mole measure?
      Amount of substance
    • Avogadro's number is 6.022 × 10²³.
      True
    • Avogadro's number is a fundamental constant in chemistry.
      True
    • The mole is defined as the amount of substance containing 6.022 × 10²³ particles
    • Carbon has an atomic mass of 12.01 g/mol.

      True
    • Avogadro's number connects moles to the number of particles in a substance.

      True
    • One mole of a substance contains 6.022 × 10²³ particles
    • Molar mass is essential for stoichiometric conversions between mass and moles.

      True
    • Molar mass is used in stoichiometry to convert between mass and moles.

      True
    • The molar mass of CO₂ is calculated as (1 × 12.01) + (2 × 16.00) = 44.01 g/mol
    • What is the formula to convert moles to grams?
      Grams = Moles × Molar Mass
    • How many grams are in 3 moles of H₂O (molar mass = 18.015 g/mol)?
      54.045 grams
    • What constant connects moles to the number of particles?
      Avogadro's number
    • What is the formula to convert grams to moles?
      Moles = Grams / Molar Mass
    • What is the significance of Avogadro's number?
      Connects moles to particles
    • What is the formula for molar mass?
      Molar Mass = Mass / Moles
    • The formula for molar mass is Mass/Moles
    • Oxygen has an atomic mass of 16.00 g/mol
    • Molar mass is expressed in units of grams per mole
    • What is the value of Avogadro's number?
      6.022 × 10²³
    • Match the unit with its definition:
      Gram ↔️ Weight of a substance
      Mole ↔️ 6.022 × 10²³ particles
      Molar Mass ↔️ Mass of one mole
      Avogadro's Number ↔️ Number of particles
    • Steps to calculate molar mass using the periodic table:
      1️⃣ Identify the elements
      2️⃣ Find atomic masses
      3️⃣ Add atomic masses
    • Adding the atomic masses of all atoms in a compound gives its molar mass.
      True
    • How many moles are in 50 grams of CO₂ (molar mass = 44.01 g/mol)?
      1.136 moles
    • The formula to convert grams to moles is Moles = Grams / Molar Mass
    • Understanding molar mass conversions is vital for solving stoichiometry problems.

      True
    See similar decks