Chemistry, 18.10.2019 01:30 ajbrock1004
For potassium metal, the work function ф(the minimum energy needed to eject an electron from the metal surface) is 3.68 x 1019 j. which is the longest wavelength of following which could excite photoelectrohs? a) 550. nm b) 500. nm c) 450. nm d) 400. nm e) 350. nm ans: b
Answers: 2
Chemistry, 22.06.2019 03:10, emilyplays474
The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?
Answers: 2
Chemistry, 22.06.2019 03:40, 19thomasar
Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)
Answers: 3
Chemistry, 22.06.2019 09:30, lisbet123085
Based on its chemical properties, identify the position of each chemical family on the periodic table.
Answers: 3
For potassium metal, the work function ф(the minimum energy needed to eject an electron from the met...
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