Stoich Practice
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the mole ratio of carbon dioxide to water in the combustion of ethane (C2H6)?
Back
The mole ratio of CO2 to H2O in the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O is 4:6 or simplified to 2:3.
2.
FLASHCARD QUESTION
Front
What is the mole ratio between N2 and NH3 in the reaction N2 + 3H2 → 2NH3?
Back
The mole ratio of N2 to NH3 is 1:2.
3.
FLASHCARD QUESTION
Front
How many grams of H2 are produced from 120 g of Na in the reaction 2Na + 2H2O → 2NaOH + H2?
Back
5.2 g of H2 are produced.
4.
FLASHCARD QUESTION
Front
What is the total number of moles of H2O produced when 12 moles of NH3 are consumed in the reaction 4NH3 + 5O2 → 4NO + 6H2O?
Back
18 moles of H2O are produced.
5.
FLASHCARD QUESTION
Front
What mass of O2 is needed to burn 36.1 g of B2H6 in the reaction B2H6 + 3O2 → 2 HBO2 + 2 H2O?
Back
124 g of O2 is needed.
6.
FLASHCARD QUESTION
Front
Define stoichiometry.
Back
Stoichiometry is the calculation of reactants and products in chemical reactions based on the conservation of mass.
7.
FLASHCARD QUESTION
Front
What is a balanced chemical equation?
Back
A balanced chemical equation has equal numbers of each type of atom on both sides of the equation.
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