In an old trunk, you find a cube of metal that you think may be aluminum, silver, lead, cobalt or tin. in lab you find that it has a mass of 222 g and a length of 2.7 cm. what is the metal? the density of each metal is given below at room temperature. o lead (11.3 g/cm) o silver (10.5 g/cm) cobalt (8.90 g/cm) o tin (7.31g/cm) aluminum (2.70 g/cm)

The density of old trunk is and it is equal to the density of metal lead.

Explanation:

Mass of the trunk , m= 222 g

Length of the cubic trunk = 2.7 cm

Volume of the cube =

Density of the truck =

The density of old trunk is and it is equal to the density of metal lead.

the temperature of the gas, in k, not celsius.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.