Answer
All the units were correct.
The unit of part b can either be any of milliliter or cubic centimeter
Density = 12446.71 g/mL
Explanation
All the units were correct.
Note:
1 milliliter = 1 cubic centimeter
g = grams
mL = milliLiter
The unit of part b can either be any of milliliter or cubic centimeter
The unit of the mass is g
The unit of the volume is mL
The unit of density is g/mL
The density of the solid = mass/volume = 87127/7 = 12446.71 g/mL