3 years ago

What is the difference between a primitive and body centered unit cell?

1 answer:

7 0

The key difference between unit cell and primitive cell is that the unit cell has parallelepiped geometry whereas 2D primitive cell has parallelogram geometry and 3D primitive cell has parallelepiped geometry.

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AnnyKZ [126]

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Explanation:

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3 years ago

50 POINTS for a legitimate response. Please answer the question, chose the correct unit conversions on the right. Please read th

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0.121 millimeters

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2 years ago

Is petrol a conductor or an insulator

Sidana [21]

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Calculate the mass of water vapour present in a room of volume 400 m3 that contains air at 27 °C on a day when the relative humi

Alex73 [517]

Answer:

Mass of water = 6251. 706g or 6.25Kg

Explanation:

Relative humidity = (actual vapor pressure/saturation vapor pressure) * 100%

Actual vapor pressure, Pw = relative humidity * saturation vapor pressure

Pw = 60% * (35.6 *0.001)atm = 0.0216atm

Note: 1mbar = 0.001atm

Using the ideal gas equation: PV=nRT; where P = Pw= 0.02136atm, V= (400

* 1000)dm^3, R= 0.082 atmdm^3/kmol, T= (27+273)K, n = number of moles

Note: 1m^3 = 1000dm^3,R is the molar gas constant.

Making n subject of the formula, n = PV/RT

n= (0.02136 * 400000)/(0.082 * 300) = 347.317 moles

Mass (g) = number of moles (n) * molar mass

molar mass of water=18g

Mass of water = 347.317 * 18 = 6251. 706g or 6.25Kg

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