Chemistry Class 9 Chapter 6: Stoichiometry

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• Class 9
• Chemistry
• Chapter 6
• FBISE SSC-I

Chapter summary

Chapter 6 of Chemistry for Class 9 is called "Stoichiometry". It covers 10 learning outcomes of the Federal Board syllabus. You will learn to: state the formulae of common elements and compounds; define molecular formula of a compound as the number and. Parhayi.com has 493 MCQs, 136 short questions and 24 long questions for this chapter.

Topics in this chapter

• State the formulae of common elements and compounds
• Define molecular formula of a compound as the number and…
• Define empirical formula of a compound as the simplest…
• Deduce the formula and name of a binary ionic compounds…
• Deduce the formula of a molecular substance from the…
• Use the relationship. Amount of substance = mass / molar…
• Define mole as amount of substance containing Avogadro’s…
• Explain the relationship between a mole and Avogadro's…
• Construct chemical equations and ionic equations to show…
• Deduce the symbol equation with state symbols for a…

Sample questions

Try these questions from the chapter. The answers are for Premium students.

1. Write a balanced chemical equation with state symbols for the reaction between: a. Mg and HCl b. NaOH and HCl (3 marks)
2. Equal numbers of moles of carbon and sulphur are taken. (a) Do they contain the same number of atoms? (b) Do they have the same mass? Explain. (C = 12, S = 32) (3 marks)
3. Calculate the number of molecules present in each of the following samples: (a) 2.5 moles of carbon dioxide (b) 3.4 moles of ammonia, NH₃ (c) 1.09 moles of benzene, C₆H₆ (d) 0.01 moles of acetic acid, CH₃COOH. (N_A = 6.022 × 10²³) (4 marks)

What Premium gives you in this chapter

• 493 MCQs with answers and explanations
• 136 short questions with full answers
• 24 long questions with answers
• 14 Learn cards
• 31 Activities and games
• chapter tests that show your weak topics

Chemistry is the study of matter and how it changes. Learn the definitions first, then practise equations, balancing and numericals until they feel easy.