Percent Composition
Flashcard
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is percent composition?
Back
Percent composition is the percentage by mass of each element in a compound, calculated by dividing the mass of the element by the total mass of the compound and multiplying by 100.
2.
FLASHCARD QUESTION
Front
How do you calculate the percent composition of an element in a compound?
Back
Percent composition = (mass of element / molar mass of compound) x 100.
3.
FLASHCARD QUESTION
Front
What is the molar mass of carbon monoxide (CO)?
Back
The molar mass of CO is approximately 28 g/mol (12 g/mol for C and 16 g/mol for O).
4.
FLASHCARD QUESTION
Front
What is the percent composition of carbon in carbon monoxide (CO)?
Back
43%.
5.
FLASHCARD QUESTION
Front
What is the percent composition of oxygen in carbon monoxide (CO)?
Back
57%.
6.
FLASHCARD QUESTION
Front
What is the molar mass of magnesium sulfate (MgSO4)?
Back
The molar mass of MgSO4 is approximately 120 g/mol.
7.
FLASHCARD QUESTION
Front
What is the percent composition of sulfur in magnesium sulfate (MgSO4)?
Back
27%.
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