

Mastering Stoichiometry Concepts and Calculations
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Easy
Wayground Content
Used 1+ times
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15 questions
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1.
FLASHCARD QUESTION
Front
What is stoichiometry?
Back
Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.
2.
FLASHCARD QUESTION
Front
What does the law of conservation of mass state?
Back
The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.
3.
FLASHCARD QUESTION
Front
In the reaction @@ ext{C}_2 ext{H}_4 + 3 ext{O}_2 ightarrow 2 ext{CO}_2 + 2 ext{H}_2 ext{O}@@, how many liters of oxygen are needed for 1 liter of ethylene?
Back
3 liters of oxygen are needed for 1 liter of ethylene.
4.
FLASHCARD QUESTION
Front
What is the molar volume of a gas at STP?
Back
The molar volume of a gas at standard temperature and pressure (STP) is 22.4 liters.
5.
FLASHCARD QUESTION
Front
How do you calculate the mass of a product formed in a reaction?
Back
To calculate the mass of a product, use the molar ratios from the balanced equation and the molar mass of the product.
6.
FLASHCARD QUESTION
Front
If 50 grams of reactants are used, what is the total mass of the products?
Back
The total mass of the products will also be 50 grams, according to the law of conservation of mass.
7.
FLASHCARD QUESTION
Front
In the reaction @@2 ext{KClO}_3 ightarrow 2 ext{KCl} + 3 ext{O}_2@@, how many moles of oxygen are produced from 2 moles of KClO3?
Back
3 moles of oxygen are produced from 2 moles of KClO3.
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