Calculate the percentage change in volume when BCC iron changes to FCC iron upon heating. Provide your answer to two decimal places
Added by Jacob O.
Step 1
Given that the density increases by 8 to 9%, we can take the average of these values to get the percentage change in density: Percentage change in density = (8% + 9%) / 2 = 8.5% Show more…
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Iron is a metal which changes its crystal structure from BCC to FCC when heated to higher temperatures (above 912°C). The radii are 1.241Å and 1.269Å in BCC and FCC forms respectively. The atomic weight is 55.847 g/mol and Avogadro's number is 6.023 x 10^23 atoms/mole. Calculate its density in g/cm^3 in both BCC and FCC forms separately.
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