
0973 03 Stoichiometry SUPPLEMENT
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
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23 questions
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1.
FLASHCARD QUESTION
Front
How does the mass of the products of a chemical reaction compare to the mass of the reactants?
Back
The mass of the products of a chemical reaction is equal to the mass of the reactants
2.
FLASHCARD QUESTION
Front
How can the mass of a reactant in a chemical reaction be calculated when the masses of the other substances in the reaction are known?
Back
Subtract the sum of the known masses of any other reactants from the sum of the known masses of the products
3.
FLASHCARD QUESTION
Front
What is a mole?
Back
The amount of a substance that contains 6.02 x 10²³ particles (The type of particle depends on the substance it could be atoms, molecules or ions)
4.
FLASHCARD QUESTION
Front
What is the symbol for the unit mole?
Back
mol.
5.
FLASHCARD QUESTION
Front
What is the value of the Avogadro constant?
Back
6.02 x 10²³
6.
FLASHCARD QUESTION
Front
How does the number of particles in one mole of a substance compare to the number of particles in one mole of any other substance?
Back
They are equal
7.
FLASHCARD QUESTION
Front
What is the mass of one mole of any substance equal to?
Back
The substance’s relative formula mass (Mr), or relative atomic mass (Ar), in grams
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