Medicinal Chemistry Quiz
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Questions and Answers

What is the molecular weight of a substance?

  • The total mass of a substance in grams
  • The sum of the atomic weights of all the atoms in a molecule of the substance (correct)
  • The number of moles in a given mass of a substance
  • The number of molecules in a given mass of a substance

    • What is medicinal chemistry?

  • The design, development, and synthesis of pharmaceutical or bio-active molecules (correct)
  • The study of chemical reactions in the human body
  • The process of manufacturing pharmaceutical drugs
  • The analysis of chemical composition of medicinal plants

    • What is Avogadro’s number?

  • $2.99 \times 10^{8}$
  • $9.81 \times 10^{5}$
  • $3.14 \times 10^{12}$
  • $6.02 \times 10^{23}$ (correct)

    • What is a mole?

    <p>The quantity of a substance that contains Avogadro’s number of molecules or formula units</p> Signup and view all the answers

    What is the molecular weight of 1-octanol?

    <p>130.23 g/mol</p> Signup and view all the answers

    How many molecules or formula units are present in 5 grams of mercury(II) iodide?

    <p>$2.41 \times 10^{21}$</p> Signup and view all the answers

    If a sample of sulfur contains $3.01 \times 10^{23}$ atoms, what is the mass of the sample?

    <p>32.06 grams</p> Signup and view all the answers

    How many moles of iron are represented by 100.0 grams of iron (Fe)?

    <p>$1.79$ moles</p> Signup and view all the answers

    What is the molecular weight of methanol (CH3OH)?

    <p>32.04 g/mol</p> Signup and view all the answers

    Suppose we have 50.0 grams of calcium (Ca). The atomic weight of calcium is 40.08 g/mol. How many atoms are present in this sample?

    <p>$9.03 \times 10^{23}$ atoms</p> Signup and view all the answers

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