CuZn

Brass is an alloy of copper and zinc. The 10-centimeter brass cube weighs 8.6 kg. Copper density is 8930 kg/m3, the zinc density is 7130 kg/m3. Calculate how many kilograms of copper and zinc a cube contains.

Correct answer:

m =  7.2928
z =  1.3072

Step-by-step explanation:


m+z = 8.6
m/8930+z/7130 = 0.1^3

m+z = 8.6
0.000112m+0.00014z = 0.001

Row 2 - 0.00011198208286674 · Row 1 → Row 2
m+z = 8.6
= 0


z = 3.695E-5/2.827E-5 = 1.30716667
m = 8.6-z = 8.6-1.30716667 = 7.29283333

m = 7.292833
z = 1.307167

Our linear equations calculator calculates it.



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