Answer:
a) D = 4.88 * 10^(-14) m^2 / s
b) <em>t </em>= 1.1 hr
Solution:
a) Magnesium in Aluminum diffusion:
D = Do * exp(-Qd / RT)
= (1.2 * 10^(-4) m^2 / s) * exp ( - 130,000 / 8.31 * 723.15)
= 4.88 * 10^(-14) m^2 / s
D = 4.88 * 10^(-14) m^2 / s
b) The composition remains same at say the distance Xo:
(Cx - Co) / (Cs - Co) = Constant
Xo^2 / D_{550} * <em>t </em>= Xo^2 / D_{450} * 15
D_{550} * <em>t </em>= D_{450} * 15
(1.2 * 10^(-4) m^2 / s) * exp ( - 130,000 / 8.31 * 723.15) * <em>t</em>
(4.88 * 10^(-14) m^2 / s) * 15
by, solving for <em>t </em>we get:
<em>t </em>= 1.1 hr
So, the time required is 1.1 hr.
The answer is 1. Pressing the Autosum button highlights the ten cells above it so that you can easily add things together. Hope this helps!
Answer:
The explaination of this question is given below in the explanation section
Explanation:
The following steps are used to create a workbook.
1- Go to start menu and search about EXCEL (application software) and then click on it to open.
If you already opened a EXCEL's workbook, and you want to create a new workbook, then you follow the following steps:
- Click the File tab.
- Click New.
- Under Available Templates, double-click Blank Workbook. Keyboard shortcut To quickly create a new, blank workbook, you can also press CTRL+N.
A new workbook will be created.
Answer:
The answer is letter A. TRUE
Explanation:
The variety of theatre introduced in the 1960s that denotes semi-professional or even amateur theatre in the New York/Manhattan area, often in locations such as church basements, YMCAs, and coffeehouses, is commonly known as off-off-Broadway. This statement is true.
Answer:
B. Everywhere CFCI is not
