
Flashcardizz Empirical/Molecular Formulas and Stoichiometry
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an empirical formula?
Back
An empirical formula represents the simplest whole-number ratio of the elements in a compound.
2.
FLASHCARD QUESTION
Front
What is a molecular formula?
Back
A molecular formula shows the actual number of atoms of each element in a molecule of a compound.
3.
FLASHCARD QUESTION
Front
How do you determine the empirical formula from percent composition?
Back
Convert the percentages to grams, then to moles, and find the simplest mole ratio.
4.
FLASHCARD QUESTION
Front
What is stoichiometry?
Back
Stoichiometry is the calculation of reactants and products in chemical reactions based on balanced equations.
5.
FLASHCARD QUESTION
Front
What is the first step in stoichiometry?
Back
The first step is to determine a balanced chemical equation.
6.
FLASHCARD QUESTION
Front
How do you convert grams to moles?
Back
Use the formula: moles = mass (g) / molar mass (g/mol).
7.
FLASHCARD QUESTION
Front
What is the mole ratio in a balanced equation?
Back
The mole ratio is the ratio of moles of one substance to moles of another substance in a balanced equation.
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