A certain amount of gas at 20c at 4atm occupies a volume of 10dm^3.calculate its number of moles

Explanation:

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In this case, according to the ideal gas equation, it is possible to notice that:

Thus, since we are asked to compute moles, we proceed as follows:

Now, since 1 L = 1 dm³ and 20 °C equal 293.15 K, we obtain:

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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.