Use the "x is small" approximation to find the concentration of the products in the following reaction which initially contains only 0.85 M HCN. Decide whether using the approximation was valid or invalid. HCN(aq) ⇌ H+(aq) + CN−(aq), Kc= 6.17 x 10−10

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.