Which of the following statements are true of uranium-238? i. its chemical properties will be exactly like those of uranium-235. ii. its mass will be slightly different from that of an atom of uranium-235. iii. it will contain a different number of protons than an atom of uranium-235. iv. it is more plentiful in nature than uranium-235. a. iii, iv b. i, ii, iii c. i, ii, iv d. ii, iii, iv e. all of these

C

Explanation:

I. Its chemical properties will be exactly like those of uranium-235.

II. Its mass will be slightly different from that of an atom of uranium-235.

IV. It is more plentiful in nature than uranium-235.

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.