Answer:
C
Step-by-step explanation:
Answer:
67
Step-by-step explanation:
2b+9r
2(2)+9(7)
4+63
67
20/1.04 = 19.60$
20.00$-19.60 = 0.40$ in change.
Answer:
V=1.17 v
Step-by-step explanation:
The difference in potential between two points can be described as: potencial of the iron less potential of the zinc, that is: 
Which can be rewrite as: V= 0.76 v + 0.41 v
V=1.17 v