C, erosion. Erosion is the natural process of breaking down natural products through wind, or similar natural resources.
A and C are incorrect because they are not complete transfer of valence electrons. Ionic bonds best to form a neutral molecule
I think it’s “number” and “type”
Mass = m = 40 grams
Volume = V = 9 cm³
Density = d = ?
Density is defined as the ratio of mass and volume.
So,
d = m/V
Using the values, we get
d = 40/9 = 4.44 g/cm³
This means the density of material would be 4.44 g/cm³
