Percent Composition

Flashcard
•
Chemistry
•
11th Grade
•
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
To calculate the percent composition of an element, use the formula: (mass of the element in 1 mole of the compound / molar mass of the compound) x 100.
3.
FLASHCARD QUESTION
Front
What is the percent composition of Cl in HClO3?
Back
The percent composition of Cl in HClO3 is approximately 42%.
4.
FLASHCARD QUESTION
Front
In the compound Li3P, which element has a greater percent composition?
Back
Phosphorus has a greater percent composition than lithium in Li3P.
5.
FLASHCARD QUESTION
Front
What is the percent composition of bromine in MgBr2?
Back
The percent composition of bromine in MgBr2 is 87%.
6.
FLASHCARD QUESTION
Front
How do you find the total atomic mass of a compound?
Back
To find the total atomic mass of a compound, sum the atomic masses of all the atoms present in the chemical formula.
7.
FLASHCARD QUESTION
Front
What is the formula for calculating the percent composition of a compound?
Back
Percent Composition = (mass of element / total mass of compound) x 100.
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