A standard solution is prepared by dissolving 5.30 g of sodium carbonate, Na2CO3, in 250 cm³ of distilled water in a volumetric flask. A 10.0 cm³ sample of this solution is removed by bulb pipette and diluted with water to the final volume of 0.100 dm³. Calculate the concentration, in mol dm-3, of the diluted solution.

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

the answer would be a

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.