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2 cards from this section. Quick, good the night before a test.
What is the role of coefficients in a chemical equation?
Think about how you would represent quantities in a recipe.
Which symbol represents a solid in a chemical equation?
Remember the states of matter: solid, liquid, gas, and aqueous.
What must be true for a balanced chemical equation?
Think about what happens before and after a reaction.
Is it acceptable to change subscripts while balancing an equation?
What happens if you alter the number of ingredients in a recipe?
Balance the following reaction: 2 C₆H₁₂ + 7 O₂ → 6 CO₂ + 6 H₂O. Explain the rationale behind each step in the balancing process.
Take it step by step and write down the counts!
For the reaction 4 Fe + 3 O₂ → 2 Fe₂O₃, identify the limiting and excess reagents if 10 grams of Fe and 10 grams of O₂ are mixed. Calculate how much Fe₂O₃ can be produced and the excess left.
Use molar masses and the ratio from the balanced equation to verify limiting reagents!
5 more questions in this section. Enroll free to practise them all.
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