Chemistry, 13.12.2019 20:31 ladawnrowles005
Devise electrochemical cells in which the following reactions could be made to occur. if liquid junctions are necessary, note them in the cell schematic appropriately, but neglect their effects.(a) h2o ⇄ h + + oh-(b) 2h2 + o2 ⇄ h2o(c) fe3+ + fe(cn)6 4- ⇄ fe2+ + fe(cn)6 3-(d) cu2+ + pb ⇄ pb2+ + cuwhat half-reactions take place at the electrodes in each cell? what is the standard cell potential in each case? which electrode is negative? would the cell operate electrolytically or galvanically in carrying out a net reaction from left to right?
Answers: 3
Chemistry, 21.06.2019 16:30, leilanimontes714
Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)
Answers: 3
Chemistry, 22.06.2019 07:40, sadcase85
22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na, so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g
Answers: 1
Chemistry, 22.06.2019 15:00, MilanPatel
How is the shape of the poem “peer” connected to its meaning?
Answers: 2
Devise electrochemical cells in which the following reactions could be made to occur. if liquid junc...
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