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Calculating Molar Mass quiz

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  • What does molar mass represent in chemistry?
    Molar mass represents the mass of a substance divided by the amount of that substance.
  • What is the SI unit for mass?
    The SI unit for mass is kilograms.
  • What is the SI unit for the amount of a substance?
    The SI unit for the amount of a substance is moles.
  • In what units is molar mass typically expressed?
    Molar mass is typically expressed in grams per mole.
  • What formula do you need to memorize for molar mass?
    You need to memorize that molar mass equals grams per mole.
  • What are some other terms that mean the same as molar mass?
    Molar weight, molecular weight, and molecular mass all mean the same as molar mass.
  • What does the term 'grams per mole' describe?
    It describes the mass of a substance divided by the amount of that substance.
  • Why is molar mass important in chemistry?
    Molar mass is important because it allows you to relate the mass of a substance to the number of moles.
  • Is molar mass a physical or chemical property?
    Molar mass is a physical property.
  • If you see the term 'molecular weight,' what is it referring to?
    It is referring to the same concept as molar mass, or grams per mole.
  • How do you calculate molar mass?
    You divide the mass of a substance by the amount of substance in moles.
  • What is the relationship between mass and moles in the context of molar mass?
    Molar mass is the ratio of mass (in grams) to the amount (in moles).
  • What unit should you use when expressing molar mass in most chemistry problems?
    You should use grams per mole (g/mol).
  • Are 'molar mass' and 'molecular mass' interchangeable terms?
    Yes, they both refer to the same grams per mole relationship.
  • What does a shaded purple box in the lesson indicate?
    It indicates a definition or formula you need to memorize.