(1)ρ=m/v=600g/52cm3≈11.5g/cm3
(2)m金=300g
m铜=300g
v金=m/ρ=300g/19.3g/cm3≈15.5cm3
v铜=m/ρ=300g/8.9g/cm3≈30.7cm3
v=v金+v铜=46.2cm3≠52cm3
(3)V金+V铜=52G
M金/19.3G/CM3+(600G-M金)/8.9G/CM3=52G
所以M金=255G
所以,含金量为255G/600G=42.5%
(这道题我做过,100%正确!)
(1)ρ=m/v=600g/52cm3≈11.5g/cm3
(2)m金=300g
m铜=300g
v金=m/ρ=300g/19.3g/cm3≈15.5cm3
v铜=m/ρ=300g/8.9g/cm3≈30.7cm3
v=v金+v铜=46.2cm3≠52cm3
(3)V金+V铜=52G
M金/19.3G/CM3+(600G-M金)/8.9G/CM3=52G
所以M金=255G
所以,含金量为255G/600G=42.5%
(这道题我做过,100%正确!)