What is stoichiometry?
Apologia Chemistry Module 6

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Chemistry
•
9th - 12th 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
Define 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
Define empirical formula.
Back
An empirical formula represents the simplest whole-number ratio of atoms of each element in a compound.
4.
FLASHCARD QUESTION
Front
How do you determine the molecular formula from the empirical formula?
Back
To find the molecular formula, multiply the subscripts in the empirical formula by a whole number that makes the molar mass of the compound equal to the given molar mass.
5.
FLASHCARD QUESTION
Front
What is the molar mass of CCl2?
Back
The molar mass of CCl2 is approximately 98.9 g/mol.
6.
FLASHCARD QUESTION
Front
What is the molar mass of C2Cl4?
Back
The molar mass of C2Cl4 is approximately 165.8 g/mol.
7.
FLASHCARD QUESTION
Front
What is the balanced equation for the combustion of C3H8?
Back
C3H8 + 5 O2 -> 3 CO2 + 4 H2O.
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