Answer:
Cobalt chloride
Explanation:
It is a molecule formed of one Cobalt atom, and two Chlorine atoms.
Solid is the matter which has resistance to change their shape accordingly.
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Solid, because when matter is in solid-state, particles are more rigid and motionless with the negligible rotational effect but face vibrations hence not resistant enough to change shape and volume. The molecules and atoms in solid are packed in a fixed position with respect to one another. This is the ‘low energy’ state of condensed matter which has confined shape.
The density of a material is its unique property by which a unknown material can be identified and also the impurity (if present) in a material can be concluded. Mathematically the density can be expressed as-. Thus from the mathematical expression we can say that the density is the mass per unit volume of a material. Here the density of ethanol is given 0.789 g/mL. Thus the weight of the 1 mL ethanol is 0.789g. Thus the weight of the 125 mL of ethanol will be (125×0.789) = 98.625 g.