The emf of the cell: Ni/Ni^+2 (1.0 M) // Au^+3 (1.0 M)/ Au (E°= -0.25 V for Ni^+2/Ni; E°= 1.5 V for Au^+3/Au) is =
A) 1.25v
B) -1.25v
C) 1.75v
D) 2.0v
please help me

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction