The percent by mass of copper to alloy is 8.0%.
The relative proportions of each element in a compound are shown by the percent composition. The formula for mass percent for each element is:
mass percent = (Mass of Solute / Mass of Solution) x 100%
Typically, grams are used as the unit of mass. The term mass percent is sometimes referred to as weight percent or w/w%. The total mass of all the atoms in a mole of the compound is the molar mass. The total of all the mass percentages ought to equal 100 percent.
We know that,
the percent by mass = (mass solute/mass solution) × 100
Given,
Mass of copper = 8.0g
Mass of alloy = 100g
the percent by mass = (8.0 g / 100 g) × 100
percent by mass = 8.0%
Thus, the percent by mass of copper to alloy is 8.0%.
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