Chemistry Chapter 3 Quiz
10 Questions
3 Views

Chemistry Chapter 3 Quiz

Created by
@SoftZinnia

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the formula weight of NaOH?

  • 23 g
  • 40 g (correct)
  • 36 g
  • 30 g

    • Why is the formula weight of NaCl not considered a molecular weight?

  • NaCl is a solid at room temperature.
  • It is too heavy to be a molecular weight.
  • It is not derived from atomic weights.
  • Molecules of NaCl do not exist since it is an ionic compound. (correct)

    • Which step is NOT part of deriving an empirical formula?

  • Divide by the smallest mole value.
  • Determine the percentage of each element. (correct)
  • Multiply to obtain whole numbers if necessary.
  • Convert grams to moles.

    • What mass does one mole of H2O have?

    <p>18.0 g</p> Signup and view all the answers

    Given 43.6% P and 56.4% O in a compound, what is the first step to find the empirical formula?

    <p>Base calculations on a 100 g sample.</p> Signup and view all the answers

    What does stoichiometry primarily deal with in chemical reactions?

    <p>Quantitative relationships between elements and compounds</p> Signup and view all the answers

    Which principle postulate distinguishes Dalton's atomic theory from earlier beliefs about matter?

    <p>Relative masses of atoms can be measured</p> Signup and view all the answers

    What does the law of conservation of mass state?

    <p>The mass of reactants equals the mass of products in a chemical reaction</p> Signup and view all the answers

    According to Dalton's theory, what causes a pure compound to maintain consistent proportions?

    <p>Combination of elements in the same ratios by mass</p> Signup and view all the answers

    What is the concept of the law of multiple proportions?

    <p>Elements can combine in various ratios to form different compounds</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser