Calculate the open cell potential, Ecell, if the half-reaction Cu2O(s) + H2O(l) + 2 e- → 2 Cu(s) + 2 OH-(aq) is coupled to a Ag/AgCl reference electrode. Standard conditions apply to the Cu2O/Cu halfreaction.

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.