Which, If Any, of the Following Metals Would Be Capable $\degree$

question 79

Multiple Choice

Which, if any, of the following metals would be capable of acting as a sacrificial anode when used with iron pipe? E $\degree$ _Fe = -0.44 V; all E $\degree$ values refer to the M²⁺/M half-cell reactions.

• A) copper, Cu, E\(\degree\) = 0.15 V
• B) cobalt, Co, E\(\degree\) = -0.28 V
• C) chromium, Cr, E\(\degree\) = -0.74 V
• D) tin, Sn, E\(\degree\) = -0.14 V
• E) None of these metals would be capable of acting as a sacrificial anode with iron.

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Definitions:

Positive Reinforcer

A stimulus that, when presented after a behavior, increases the likelihood of that behavior being repeated.

Conditioned Stimulus

A stimulus that was neutral at first but, after being associated with an unconditioned stimulus, starts to generate a conditioned response.

Positive Reinforcer

An incentive that, upon being introduced following an action, heightens the probability of the action being performed again.

Temper Tantrums

Emotional outbursts, typically seen in children, that are characterized by yelling, crying, or physical displays of frustration.