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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the molar mass of CO2.
💡 Hint: Remember to sum the atomic masses.
Question 2
Easy
Define a mole.
💡 Hint: Think about how we count other items like dozens.
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 mole defined as?
- 6.022 x 10²³ particles
- 1 g of a substance
- The mass of an element
💡 Hint: This number is important in counting particles.
Question 2
Molar mass is expressed in what unit?
- True
- False
💡 Hint: Think about mass measurements in grams.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a chemist has 100 grams of sodium chloride, find the number of moles and describe its significance in a chemical reaction.
💡 Hint: Use the molar mass to convert grams into moles.
Question 2
A sample of carbon dioxide exhibits 44 grams in a reaction. Determine the moles present and the stoichiometric implications for a reaction with another 46 grams of water.
💡 Hint: Recall the ratio of reactants in a balanced equation.
Challenge and get performance evaluation