Ids Mass
May/090
How do you find the density and mass of this alloy?
An alloy is 60% iron, 25% chromium, and 15% nickel (by mass). Estimate its density. Show work. Assume that volumes of metals are additive when the metals are mixed.
anyone know!? cause i dont even know how to start this...nevermind figure out the answer. lol please help!! id greatly appreciate it. 
You would be needing individual metal densities.
suppose the density of iron is d1 tons/m^3, the density of chromium is d2 tons/m^3 & the density of nickel is d3 tons/m^3
Let us assume the weight of the alloy is 100 tons
weight of iron = 0.6*100 = 60 tons
similarly, weight of chromium is 25 tons & weight of nickel is 15 tons
volume of iron = 60/d1 m^3
volume of chromium = 25/d2 m^3
volume of nickel = 15/d3 m^3
total volume = 60/d1 + 25/d2 + 15/d3 m^3
density of alloy = mass / volume = 100/(60/d1 + 25/d2 + 15/d3) tons/m^3
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