In an old trunk, you find a piece of metal that you think may be aluminum, silver, or lead. you take it to a lab, where you find it has a mass of 114 g and a volume of 10.9 cm3. what is the metal you found? assume that densities of aluminium, silver, and lead are 2.70, 10.5, and 11.3 g/ml, respectively.

The metal found is silver.

Explanation:

To calculate density of a substance, we use the equation:

We are given:

Mass of object = 114 g

Volume of object =   (Conversion factor:    )

Putting values in above equation, we get:

The calculated value of density matches the density of silver.

Hence, the metal found is silver.

catya your not at all which answer i've seen you do this on another question!

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.