Arectangular block of copper has a mass of 143.584 g and measures 5.05 cm by 2.55 cm by 1.25 cm. find the density of the copper block.

The density of copper block is, 8.92 g/mL

Explanation :  Given,

Length of copper block = 5.05 cm

Breadth of copper block = 2.55 cm

Height of copper block = 1.25 cm

To calculate the volume of copper block by using the formula of volume of cuboid, we use the equation:

where,

V = volume

l = length

b = breadth

h = height

Putting values in above equation, we get:

Conversion used :

Now we have to calculate the density of copper block.

Formula used :

Given:

Mass of copper block = 143.584 g

Volume of copper block = 16.1 mL

Now put all the given values in this formula, we get:

Therefore, the density of copper block is 8.92 g/mL

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.

5.6⋅10−^19  j

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