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Molecular Formula quiz #3

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  • How many atoms of oxygen are represented in 2CaNO3?
    There are 6 oxygen atoms in 2Ca(NO3)2.
  • A molecule with the chemical formula C6H12O6 is probably a
    It is probably a sugar, specifically glucose.
  • A group of atoms joined together in a particular way
    A molecule is a group of atoms joined together in a particular way.
  • Enter the molecular formula for butane, C4H10. Express your answer as a chemical formula.
    The molecular formula for butane is C4H10.
  • What is the chemical formula for glucose?
    The chemical formula for glucose is C6H12O6.
  • Write the chemical formula for this molecule:
    The chemical formula depends on the molecule shown; for water, it is H2O.
  • Gluten chemical formula
    Gluten is a mixture of proteins and does not have a simple chemical formula.
  • What does the empirical formula represent in a compound?
    The empirical formula shows the simplest whole-number ratio of elements in a compound, not the actual number of atoms.
  • How do you obtain the molecular formula from the empirical formula if you know the n factor?
    Multiply each subscript in the empirical formula by the n factor to get the molecular formula.
  • If a compound's n factor is 1, what does this indicate about its empirical and molecular formulas?
    It means the empirical formula and the molecular formula are identical for that compound.
  • What information is needed to determine a compound's molecular formula?
    To determine a compound's molecular formula, you need its empirical formula and the molar mass of the compound. The empirical formula gives the simplest ratio of elements, and the molar mass allows calculation of the n factor, which is used to find the actual number of atoms in the molecular formula.
  • What is a molecular formula in chemistry?
    A molecular formula shows the actual number of each type of atom present in a molecule of a compound, not just the simplest ratio.
  • What is the molecular formula for butane?
    The molecular formula for butane is C4H10.
  • What type of compound has the same empirical and molecular formula?
    A compound whose empirical formula and molecular formula are the same has an n factor of 1, meaning the simplest ratio of elements is also the actual number of atoms in the molecule.