HELPP ANSWERSSS A student designs an investigation to test the reactivity of two elements with HCl to produce hydrogen gas. Using the periodic table as a model which of the following would you expect to produce the most hydrogen gas within the first minute of the reaction?

A.
Al, because it has the higher ionization energy and more readily accepts electrons to participate in a reaction.

B.
Al, because it has the lower ionization energy and more readily gives up valence electrons to participate in a reaction.

C.
Cs, because it has the lower ionization energy and more easily gives up its valence electrons to participate in a reaction.

D.
Cs, because it has the higher ionization energy and more easily gives up its valence electrons to participate in a reaction.

C.  Cs, because it has the lower ionization energy and more easily gives up its valence electrons to participate in a reaction.

Explanation:

The Cs will produce the most hydrogen gas because it has a lower ionization energy and more easily gives up its valence electrons to participate in the reaction.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

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.