!PLEASE HELP ASAP! 216.0 grams of aluminum sulfide react with 393.0 grams of water to produce aluminum
hydroxide and hydrogen sulfide.

Problem #5: Suppose 316.0 g aluminum sulfide reacts with 493.0 g of water. What mass of the excess reactant remains? The unbalanced equation is: Al2S3 + H2O ---> Al(OH)3 + H2S Problem #6: In this reaction: CaCO3 + 2HCl ---> CaCl2 + CO2 + H2O

where are the choice options?

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.