Answer:
37.9 % of the alloy is zinc
Explanation:
Step 1: Date given
Mass of pure gold = 64.0 grams
Mass of pure zinc = 39.0 grams
Step 2: Calculate Total mass
Total mass = mass pure gold + mass pure zinc
Total mass = 64.0 grams + 39.0 grams
Total mass = 103 grams
Step 3: Calculate % zinc
% zinc = (mass zinc / total mass)*100%
% zinc = (39.0 grams / 103 grams) *100%
% zinc = 37.9 %
37.9 % of the alloy is zinc
