What is the molecular formula of a compound?
Units 3 & 4 CMT Review OL

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Chemistry
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10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The molecular formula of a compound shows the actual number of atoms of each element in a molecule. For example, C6H12O6 is the molecular formula for glucose.
2.
FLASHCARD QUESTION
Front
What is the empirical formula of a compound?
Back
The empirical formula of a compound represents the simplest whole number ratio of the elements in that compound. For example, the empirical formula of C6H12O6 is CH2O.
3.
FLASHCARD QUESTION
Front
How do you determine the coefficients in a balanced chemical equation?
Back
Coefficients are determined by balancing the number of atoms of each element on both sides of the equation. This ensures the law of conservation of mass is followed.
4.
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). It is calculated by summing the atomic masses of all atoms in the formula.
5.
FLASHCARD QUESTION
Front
What is the significance of balancing chemical equations?
Back
Balancing chemical equations is important because it reflects the conservation of mass, ensuring that the same number of each type of atom is present on both sides of the equation.
6.
FLASHCARD QUESTION
Front
What is the difference between a molecular formula and an empirical formula?
Back
A molecular formula shows the actual number of atoms in a molecule, while an empirical formula shows the simplest ratio of the elements.
7.
FLASHCARD QUESTION
Front
How do you calculate the molar mass of Ba(C2H3O2)2?
Back
To calculate the molar mass, sum the atomic masses: Ba (137.33) + 2*(C (12.01)*2 + H (1.01)*3 + O (16.00)*2) = 255.3 g/mol.
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