A substance A decomposes in a first order reaction. The half-life for this reaction is 48 s. In an experiment, the initial amount of A is 1.00 mol. The amount, in moles, of A remaining at 144 s is A 0.500 B 0.333 C 0.250 D 0.125

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.