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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the molar mass of H₂O?
💡 Hint: Add the molar masses of H and O.
Question 2
Easy
How many moles are in 22 grams of NaCl?
💡 Hint: Use the molar mass of NaCl.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the first step in stoichiometric calculations?
- Balancing the equation
- Finding molar mass
- Converting to grams
💡 Hint: Remember, we can't do calculations without a balanced equation!
Question 2
True or False: The mole ratio is derived from the unbalanced equation.
- True
- False
💡 Hint: Think about what balancing does for our equations!
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If 50 grams of iron (Fe) reacts with excess oxygen, how many grams of iron(III) oxide (Fe₂O₃) can be formed? (Fe + O₂ → Fe₂O₃)
💡 Hint: Remember to balance the equation first!
Question 2
In the reaction C₃H₈ + O₂ → CO₂ + H₂O, if 10 grams of propane is used, determine the moles of CO₂ produced.
💡 Hint: Check the coefficients in the balanced equation carefully!
Challenge and get performance evaluation