Practice Mole To Mole Relationships (1.2) - Stoichiometry - IB 10 Sciences (Group 4)

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9 questions

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6 sample questions

Question 1.
What is a mole?
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Think about counting atoms like you count oranges!
Question 2.
In the equation 2H₂ + O₂ → 2H₂O, how many moles of Oxygen are needed for every 2 moles of Hydrogen?
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Focus on the coefficients of the equation.
3Question 3.
What does a balanced equation ensure?
- Different number of atoms
- Same number of atoms
- More products than reactants
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Look at the law of conservation.
4Question 4.
Is Avogadro's number approximately 6.022×10^23?
- True
- False
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This is a key concept in chemistry!
Question 5.
In the reaction N₂ + 3H₂ → 2NH₃, if you have 40 grams of N₂ and 10 grams of H₂, which reactant will be limiting and what will be the total mass of ammonia produced?
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Use molar mass conversions and keep track of ratios!
Question 6.
A student started with 15 grams of CaCO₃. How many grams of CO₂ can be obtained from its decomposition (CaCO₃ → CaO + CO₂)?
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Think about the balances and convert to moles.

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