2 years ago

What kind of analysis would be conducted to identify project costs?

Engineering

1 answer:

PolarNik [594]2 years ago

5 0

Answer: C. financial analysis

Explanation:

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3 years ago

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3 years ago

You want to plate a steel part having a surface area of 160 with a 0.002--thick layer of lead. The atomic mass of lead is 207.19

Pepsi [2]

Answer:

To answer this question we assumed that the area units and the thickness units are given in inches.

The number of atoms of lead required is 1.73x10²³.

Explanation:

To find the number of atoms of lead we need to find first the volume of the plate:

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t: is the thickness = 0.002

Assuming that the units given above are in inches we proceed to calculate the volume:

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Now, using the density we can find the mass:

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Finally, with the Avogadros number ( $N_{A}$ ) and with the atomic mass (A) we can find the number of atoms (N):

$N = \frac{m*N_{A}}{A} = \frac{59.5 g*6.022 \cdot 10^{23} atoms/mol}{207.19 g/mol} = 1.73 \cdot 10^{23} atoms$

Hence, the number of atoms of lead required is 1.73x10²³.

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