Question

合金密度.已知Mg的密度是1.74g/cm3.Zn的密度是7.133g/cm3.Al的密度是2.7g/cm3.

Answer 1

合金密度.已知Mg的密度是1.74g/cm3.Zn的密度是7.133g/cm3.Al的密度是2.7g/cm3.求Zn-6%Al-3%Mg的密度.表示100g该合金中含有6g Al以及3g Mg

ρ＝m/V

m合金=100g

V合金=VMg+VZn+VAl

ρ合金＝100g/(VMg+VZn+VAl)

VMg＝m/V=3/1.74

VZn＝m/V=91/7.133

VAl ＝m/V=6/2.7

ρ合金＝5.987g/cm3