Practice FORMULA UNIT MASS - 3.5.2 | 3. Atoms and Molecules | CBSE 9 Science
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FORMULA UNIT MASS

3.5.2 - FORMULA UNIT MASS

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Calculate the formula unit mass for sodium chloride (NaCl).

💡 Hint: Add the atomic mass of sodium and chlorine.

Question 2 Easy

What is the atomic mass of sodium (Na)?

💡 Hint: Use the periodic table for the atomic mass.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does formula unit mass refer to?

Molecular weight of molecules
Atomic mass of ions
Sum of atomic masses in an ionic compound

💡 Hint: Remember what an ionic compound is.

Question 2

True or False: Molecular mass applies only to ionic compounds.

True
False

💡 Hint: Recall the definitions of both terms.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Calculate the formula unit mass of potassium permanganate (KMnO4).

💡 Hint: Consider the mass for each atom and multiply when necessary.

Challenge 2 Hard

If 5 formula units of NaCl react with 3 formula units of CaCl2, what is the total formula unit mass before and after the reaction?

💡 Hint: Use formula unit mass to calculate the starting totals.

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Reference links

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