What is stoichiometry?
Stoichiometry Practice Flashcard

Flashcard
•
Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
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 is the mole concept?
Back
The mole is a unit of measurement in chemistry that represents 6.022 x 10^23 particles (atoms, molecules, ions, etc.).
3.
FLASHCARD QUESTION
Front
How do you calculate moles from grams?
Back
Moles = mass (g) / molar mass (g/mol).
4.
FLASHCARD QUESTION
Front
What is an empirical formula?
Back
An empirical formula is the simplest whole-number ratio of atoms of each element in a compound.
5.
FLASHCARD QUESTION
Front
How do you determine the empirical formula from a molecular formula?
Back
Divide the subscripts in the molecular formula by their greatest common divisor.
6.
FLASHCARD QUESTION
Front
What is the balanced equation for the formation of ammonia from nitrogen and hydrogen?
Back
N2 + 3H2 → 2NH3.
7.
FLASHCARD QUESTION
Front
How many moles of H2 are needed to react with 2 moles of N2?
Back
6 moles of H2 are needed.
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