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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the number of moles in 50 grams of glucose (C6H12O6).
💡 Hint: Use the molar mass of glucose which is approximately 180 g/mol.
Question 2
Easy
In the balanced equation 2Na + Cl2 → 2NaCl, what is the mole ratio of Na to NaCl?
💡 Hint: Look at the coefficients of each reactant and product.
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 Avogadro's number?
- 6.022 × 10²²
- 6.022 × 10²³
- 6.022 × 10²⁴
💡 Hint: It has a specific numerical value significant in chemistry.
Question 2
True or False: Theoretical yield is always equal to actual yield.
- True
- False
💡 Hint: Think about real laboratory conditions.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a chemist combusts 5 grams of propane in a reaction yielding 18 grams of carbon dioxide, what is the percent yield of the reaction if the theoretical yield was 22 grams?
💡 Hint: Remember the percent yield formula.
Question 2
How would you prepare a 0.5 M solution of sodium chloride from a 2 M stock solution? Calculate the volume of stock needed for 1 L of final solution.
💡 Hint: Set up the dilution equation and solve for the unknown volume.
Challenge and get performance evaluation