Empirical & Molecular Formulas
Flashcard
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of a coefficient in a chemical equation?
Back
The big number that tells you the number of molecules.
2.
FLASHCARD QUESTION
Front
What is the empirical formula for Si2F6?
Back
SiF3
3.
FLASHCARD QUESTION
Front
Which pair of compounds has the same empirical formula: NaCrO4 and Na2Cr2O7, or C2H4O2 and C6H12O6?
Back
C2H4O2 and C6H12O6
4.
FLASHCARD QUESTION
Front
What is the molecular formula for glycerol with a molar mass of 92.09g/mol and percent composition of 39.12% C, 8.75% H, and 51.12% O?
Back
C3H8O3
5.
FLASHCARD QUESTION
Front
What is the molecular formula for a compound with the empirical formula K2SO4 and a molecular mass of 696g?
Back
K8S4O16
6.
FLASHCARD QUESTION
Front
Define empirical formula.
Back
The simplest whole-number ratio of atoms of each element in a compound.
7.
FLASHCARD QUESTION
Front
What is a molecular formula?
Back
A formula that shows the actual number of atoms of each element in a molecule.
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