Topics: Fundamentals of electrochemistry; Electrochemical cells Use general chemistry rules for significant figures.
2. (13 pts) Calculate Ecell for the following galvanic cell:
Pt(s) | Cr2+ (0.20 M), Cr3+ (0.0030 M) || Pb2+ (0.15 M) | Pb(s)
Pb2+ + 2e ⇌ Pb(s) EPb° = –0.1263 V
Cr3+ + e ⇌ Cr2+ ECr° = –0.424 V

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question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

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(jacemorris04)

the answer is c.the valence of the atoms combine .