If an alloy contains 40 wt % gold, 20 wt % palladium, 10 wt % platinum, and 30 wt % copper, the nobility would be _____ wt %.

Question

Quizplus · Accepted Answer

Nobility in the context of alloys refers to the proportion of noble metals in the alloy. Noble metals are resistant to corrosion and oxidation in moist air; they include gold, palladium, and platinum. Adding the percentages of these metals gives 40% (gold) + 20% (palladium) + 10% (platinum) = 70%. However, the correct calculation based on the options provided should be 40% (gold) + 20% (palladium) + 10% (platinum) = 70%, indicating a possible typo in the options. The closest correct answer based on the options provided is 75%, acknowledging a discrepancy in the question or options.

If an Alloy Contains 40 Wt % Gold, 20 Wt