Chemistry

Image

Stoichiometry--Mixed Problems

60
plays

10 questions

Show Answers
See Preview
  • 1. Multiple-choice
    2 minutes
    1 pt

    Nitric acid is formed by the reaction of nitrogen dioxide with water:

    NO2 (g) + H2O (l) → NO (g) + HNO3 (aq)

    How many moles of water are needed to react with 8.4 mol NO2?

    2.8 mol H2O

    3.0 mol H2O

    8.4 mol H2O

    25 mol H2O

  • 2. Multiple-choice
    2 minutes
    1 pt

    Phosphorus trifluoride is formed from its elements:

    P4 (s) + F2 (g) → PF3 (g)

    How many grams of fluorine are needed to react with 6.20 g of phosphorus?

    2.85 g F2

    5.70 g F2

    11.4 g F2

    37.2 g F2

  • 3. Multiple-choice
    30 seconds
    1 pt

    True or False

    A mole ratio is always written with the larger number in the denominator.

    Never

    Sometimes

    True

    False

  • Expore all questions with a free account

    Already have an account?
library
create
reports
classes