Chemistry chemistry homework if u know

What is the relation between concentration of reactants and the rate of chemical reaction?

One does not belong why? ice, gold ,wood ,diamond and table salt

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.