What is an empirical formula?
1U7 % Comp, Emp/Molec Formulas

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Chemistry
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11th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
An empirical formula represents the simplest whole-number ratio of the elements in a compound.
2.
FLASHCARD QUESTION
Front
How do you calculate the percent composition of a compound?
Back
Percent composition is calculated by dividing the mass of each element in a compound by the total molar mass of the compound and multiplying by 100.
3.
FLASHCARD QUESTION
Front
What is the molecular formula of a compound?
Back
The molecular formula shows the actual number of atoms of each element in a molecule of the compound.
4.
FLASHCARD QUESTION
Front
How do you determine the empirical formula from percent composition?
Back
Convert the percent composition to grams, then to moles, and simplify the mole ratio to the smallest whole numbers.
5.
FLASHCARD QUESTION
Front
What is the molar mass of a compound?
Back
The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).
6.
FLASHCARD QUESTION
Front
How do you find the percent by mass of an element in a compound?
Back
Percent by mass is found by dividing the mass of the element by the total mass of the compound and multiplying by 100.
7.
FLASHCARD QUESTION
Front
What is the significance of the empirical formula in chemistry?
Back
The empirical formula provides insight into the composition of a compound and is useful for determining molecular formulas.
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