Practice - Rules for Counting Atoms
Practice Questions
Test your understanding with targeted questions
How many hydrogen atoms are in H₂O?
💡 Hint: Look at the subscript after 'H'.
What is the total number of atoms in CO₂?
💡 Hint: Add the number of each type of atom.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a subscript indicate in a chemical formula?
💡 Hint: Think about how many hydrogens are in H₂O.
True or False: Parentheses in chemical formulas do not affect the count of atoms.
💡 Hint: Consider how (OH)₂ means two groups of two atoms.
1 more question available
Challenge Problems
Push your limits with advanced challenges
For the complex molecule As₂(SO₄)₃, calculate the total number of atoms present.
💡 Hint: Break down the compound into parts, count, and then sum them up.
Determine the total number of atoms in an aqueous solution of C₁₀H₁₈N₂O₄.
💡 Hint: Count through each type carefully; they're all present in the formula!
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Reference links
Supplementary resources to enhance your learning experience.