P and Q are two alloys of aluminum and brass prepared by mixing metals in proportions 7:2 and 7:11 respectively. If equal quantities of the two alloys are melted to form a third alloy R, the proportion of aluminum and brass in R will be :a) 5:9 b) 5:7 c) 7:5 d)9:5
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SOLVED:What allows some pairs of metals to form alloys that have the same structure at any composition, while other pairs of metals form alloys with structures that depend on the relative composition of the two metals?
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