Copper is known to have a density of 8.96g/cm3. If I have a 25 kg block of copper, how much volume does it take up in cm3? In Liters?

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

mass = 25 kg = 25000 g

= 2790 cm³

But 1000 cm³ = 1 L

2790 cm³ = 2.79 L

We have the final answer as

Hope this helps you

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the answer is na (sodium)