Acell is built using two electrodes: what reaction occurs at the cathode?
al3+ + 3e —> al e° = -1.66v
cu2+ + 2e —> cu e° = +0.34v

a. cu —> cu2+ + 2e-
b. cu2+ + 2e- —> cu
c. al3+ + 3e- —> al
d. al —> al3+ + 3e-

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag

List and describe the neurological effects of the vocs and other air pollutants,as described by dr.theo colborn