Practice Chemical Engineering (6.4) - Stoichiometry - IB 10 Sciences (Group 4)

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10 questions

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6 sample questions

Question 1.
What is Avogadro's number?
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It’s the number of particles in one mole.
Question 2.
What does a balanced chemical equation illustrate?
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Think about the conservation of mass!
3Question 3.
What is Avogadro's number used for?
- A measure of temperature
- Counting particles in a mole
- To measure mass in kilograms
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It defines a mole!
4Question 4.
Theoretical yield is based on the limiting reactant.
- True
- False
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Remember which reactant restricts production!
Question 5.
Calculate the theoretical yield of water produced from 10 grams of hydrogen reacted with 20 grams of oxygen (2H₂ + O₂ → 2H₂O).
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Start by converting grams to moles!
Question 6.
If 15 grams of sodium reacts with 20 grams of chlorine to produce sodium chloride (2Na + Cl₂ → 2NaCl), identify the limiting reactant and percent yield if 25 grams of NaCl is obtained.
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Calculate theoretical yield first!

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