D because these are the biggest particles, and are therefore, the most dense.
The Answer will be
A, B, and D
Not entirely sure though, comment if I'm wrong about this or delete this so no one else gets it wrong if it is
Answer: About 0.20 grams of copper (II) is formed, and some aluminum is left in the reaction mixture
Multiply the volume and density together. Multiply your two numbers together, and you'll know the mass of your object. Keep track of the units as you do this, and you'll see that you end up with units of mass (kilograms or grams). Example: We have a diamond with volume 5,000 cm3 and density 3.52 g/cm3
