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icang [17]
2 years ago
11

Pacemakers are electronic devices that help regulate the heart rate. currently, lithium-iodine cells are commonly used to power

pacemakers and have replaced zinc-mercury cells. table 1 provides the operating cell potential, e, for each cell. table 2 provides the standard reduction potentials for several half-reactions related to zinc-mercury and zinc-air cells.
SAT
1 answer:
Tju [1.3M]2 years ago
6 0

The major difference is that the operating potential of the lithium-iodine cell indicates its' cell reaction is more thermodynamically favorable.

<h3>What is the difference in cell potential?</h3>

The Zinc-Mercury Cell reaction is; Zn + HgO = ZnO + Hg. It also has long storage life and stable voltage(1.35V).

The major difference between the zinc-mercury cell and the lithium-iodine cell is that during the initial cell operation, each reaction is thermodynamically favorable, but the larger operating potential of the lithium-iodine cell indicates that its cell reaction is more thermodynamically favorable.

Read more about Cell Potential at; brainly.com/question/19036092

#SPJ1

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The standard error of the difference of sample means is 0.444

From the complete question, we have the following parameters

<u>Canadians</u>

  • Sample size = 50
  • Mean = 4.6
  • Standard deviation = 2.9

<u>Americans</u>

  • Sample size = 60
  • Mean = 5.2
  • Standard deviation = 1.3

The standard error of a sample is the quotient of the standard deviation and the square root of the sample size.

This is represented as:

SE = \frac{\sigma}{\sqrt n}

The standard error of the Canadian sample is:

SE_1 = \frac{2.9}{\sqrt{50}}

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SE_1 = 0.41

The standard error of the American sample is:

SE_2 = \frac{1.3}{\sqrt{60}}

So, we have:

SE_2 = 0.17

The standard error of the difference of sample means is then calculated as:

SE= \sqrt{SE_1^2 + SE_2^2}

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