Practice Stoichiometric Calculations (3) - Stoichiometry - IB 10 Sciences (Group 4)

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9 questions

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6 sample questions

Question 1.
What is the molar mass of H₂O?
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Add the molar masses of H and O.
Question 2.
How many moles are in 22 grams of NaCl?
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Use the molar mass of NaCl.
3Question 3.
What is the first step in stoichiometric calculations?
- Balancing the equation
- Finding molar mass
- Converting to grams
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Remember, we can't do calculations without a balanced equation!
4Question 4.
True or False: The mole ratio is derived from the unbalanced equation.
- True
- False
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Think about what balancing does for our equations!
Question 5.
If 50 grams of iron (Fe) reacts with excess oxygen, how many grams of iron(III) oxide (Fe₂O₃) can be formed? (Fe + O₂ → Fe₂O₃)
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Remember to balance the equation first!
Question 6.
In the reaction C₃H₈ + O₂ → CO₂ + H₂O, if 10 grams of propane is used, determine the moles of CO₂ produced.
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Check the coefficients in the balanced equation carefully!

5 more questions in this section. Enroll free to practise them all.