If 38.7 grams of lithium chlorate decomposes, how many grams of oxygen gas can be produced?

2liclo3 → 2licl + 3o2

Explanation:

We will need a balanced chemical equation with masses and molar masses, so, let's gather all the information in one place.

MM:        90.39                   32.00

            2LiClO₃ ⟶ 2LiCl  + 3O₂

m/g:        38.7

(a) Moles of LiClO₃

(b) Moles of O₂

(c) Mass of O₂

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.