3. the density of pure solid copper is 8.94 grams per milliliter. what volume
does 5 kilograms of copper occupy?

v = 559.3 mL

Explanation:

Given data:

Density of copper = 8.94 g/mL

Mass of copper = 5 Kg

Volume of copper = ?

Solution:

First of all we will convert the mass into g.

5 kg ×1000 g/1 kg

5000 g

D = m/v

v = m/d

v = 5000 g/ 8.94 g/mL

v = 559.3 mL

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.