General Chemistry: What is the volume of the plate? Monel metal is a corrosion-r

Question

General Chemistry: What is the volume of the plate?

Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A particular alloy with a density of 8.80 g/cm^3 and containing 0.056 % Si by mass is used to make a rectangular plate that is 15.0 cm long, 12.5 cm wide, and 4.50 mm thick and has a 2.50-cm-diameter hole drilled through its center such that the height of the hole is 4.50 mm. The silicon in the plate is a mixture of naturally occurring isotopes. One of the those isotopes is silicon-30, which has an atomic mass of 29.97376 amu. The percent natural abundance, which refers to the atoms of a specific isotope, of silicon-30 is 3.10%. What is the volume of the plate? Express the volume numerically in cubic centimeters.

Explanation / Answer

A)

The volume of any rectangular plate is given by

V = h*A

h = height, A = area

Area of a rectangle = l*d

l = lenght, d = depth

so

V = 15 * 12.5 * 4.5 cm3

V = 843.75 cm3

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