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In this lesson, we will learn how to calculate the percentage composition of a material using chemical formulas or the masses of constituent elements.
compound contains only the elements
A sample of the compound with a mass of
is found to contain 6.50 g of
What is the percentage composition of the compound?
A 10 g sample of silicon carbide
is found to contain 3.0 g of carbon. What is the percentage composition of silicon carbide?
What is the percentage composition of calcium carbonate
? State percentages to 1 decimal place.
To 1 decimal place, calculate the oxygen content of a water molecule as a percentage of the total mass.
A 5.0 g sample of spinal fluid contains 3.75 mg (0.00375 g) of glucose.
What is the percent by mass of glucose in spinal fluid?
A bottle of a tile cleanser contains 135 g of
and 775 g of water. What is the percent by mass of
in this cleanser?
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