MediumChemistryHigh School (9–10)GeneralMetals and Non-metals › Properties of Metals and Non-metalsNumericalBoard Exam
A brass door handle of 650 g is 62 % copper and 38 % zinc. Find the mass of each metal.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A brass door handle of is copper and zinc. Find the mass of each metal.
Need a reminder? The key ideaShow
An alloy is a mixture of a metal with other elements, melted together. Brass: copper and zinc. Bronze: copper and tin. Solder: lead and tin. Stainless steel: iron, chromium and nickel. Pure gold is carat; carat gold is gold. Mass of a part = total mass × its percentage ÷ .
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Copper. .
Step 2. Zinc. .
Check. .
Answer: of copper and of zinc.
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