Diffusion of carbon into the surface of BCC steel at 600oC for 10 hours results in a carbon concentration of 0.2wt% at a depth of 1.5 mm below the surface. At what depth will the same concentration be obtained if the diffusion time is increased to 20 hours, leaving the temperature at 600o

Solve by hand please solve correctly please

Thermo-fluid Mechanics I want a quick solution

At approximately what temperature (in Kelvin) would a specimen of an alloy have to be carburized for 2.0 h to produce the same diffusion result as at 760°C for 13 h? Assume that values for Do and Qd are 1.3 × 10-4 m²/s and 135 kJ/mol, respectively. T= i K

You wish to carburize 0.2 wt% C steel ball bearings. The balls have a diameter of 2.5 mm. You anneal them at 930 °C in an atmosphere which fixes the surface carbon concentration at 1 wt% C. (a) How long will it take to raise the average C concentration to 0.6 wt% ? (b) What is the concentration at the centre of each ball at this time?

The diffusion coefficients for carbon in nickel are given at two temperatures: T(°C) D (m²/s) (a) Determine the value of Do. i (b) Determine the value of Qd. i i kJ/mol (c) What is the magnitude of D? at 810°C. 600 700 ! m²/s (Use scientific notation.) 5.5 x 10-14 3.9 × 10-13 m²/s (Use scientific notation.)

Exhaust gas from an automobile contains air and 10-4 mole fractions of NO in air at 25 degC and 1.2 atm. Express this concentration as a mass concentration (kg/m3). Remember  that the MW of NO is 30 g/mol

Solve with me time 40 minutes