Stoichiometry Basics

Flashcard
•
Chemistry
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a mole ratio?
Back
The ratio of a reactant/product to a different one - compared by the number of particles.
2.
FLASHCARD QUESTION
Front
Where are the numbers for a mole ratio found?
Back
They are found as coefficients in the reaction's balanced chemical equation.
3.
FLASHCARD QUESTION
Front
How many moles of ethane (C2H6) are required to produce 13.5 moles of water from the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O?
Back
4.5 mol C2H6
4.
FLASHCARD QUESTION
Front
What is the first step in solving how many moles of oxygen gas are needed to react completely with 6 moles of ethane (C2H6) in the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O?
Back
Identify the mole ratio between ethane and oxygen from the balanced equation.
5.
FLASHCARD QUESTION
Front
What is the final answer for how many moles of oxygen gas are needed to react completely with 6 moles of ethane (C2H6) in the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O?
Back
21 mol O2
6.
FLASHCARD QUESTION
Front
Define stoichiometry.
Back
The calculation of reactants and products in chemical reactions.
7.
FLASHCARD QUESTION
Front
What is the purpose of balancing a chemical equation?
Back
To ensure that the number of atoms for each element is the same on both sides of the equation.
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