An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. The copper electrode is placed in a solution of 0.10 M NaOH that is saturated with Cu(OH)2. Calculate the cell potential. The Ksp of Cu(OH)2 is 1.6 x 10-19.

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above