
Empirical and Molecular Formula
Flashcard
•
Chemistry
•
10th 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 is the simplest whole-number ratio of 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 a molecular formula?
Back
Divide the subscripts in the molecular formula by their greatest common divisor.
4.
FLASHCARD QUESTION
Front
What is the empirical formula for C6H12?
Back
C1H2.
5.
FLASHCARD QUESTION
Front
If a compound has a molecular formula of C4H8, what is its empirical formula?
Back
C2H4.
6.
FLASHCARD QUESTION
Front
What is the empirical formula for N2S3?
Back
N2S3.
7.
FLASHCARD QUESTION
Front
How do you find the empirical formula from mass data?
Back
Convert the mass of each element to moles, then find the simplest mole ratio.
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