Quantitative Chemistry

• Relative atomic mass formula

  $\frac{\Sigma(\text{isotope abundance} \times \text{isotope mass number})}{\Sigma \text{isotope abundance}}$
• How are chemical amounts measured?

  In moles, symbolized as mol
• How do you calculate the number of moles from mass?

  number of moles = mass (g) / A
• Is the Mʳ of a compound greater or less than the Aʳ of any of the elements on the compound


  Greater
• What is a Mole?


  A unit of constant measurement in chemistry.
• Percentage yield = (mass of product made/maximum possible product) x 100