A cube of metal weighs 1.45 kg and displaces 542 mL of water when immersed. Calculate the density of the metal.

The Density of the cube of metal is 2.675g/mL or 2675kg/mL.

Explanation:

Given the following data;

Mass of metal = 1.45kg to gram (g) = 1.45 × 1000 = 1450g

Volume of the cube of metal = 542mL

Density = ?

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the equation;

Substituting into the equation, we have;

Density = 2.675g/mL

In kilograms, the density is 2.675 x 1000 = 2675kg/mL.

iron and sleel

make siroeel

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.