Having trouble reading this chart I know how to solve for Q

Having trouble reading this chart. I know how to solve for Q and Do but cant figure out what the element is. I know to convert temp to absolute and divide a 1000 by it to read the X axis but the Y axis is confusing me on how to read it. Thanks

Solution

It\'s just like studying casual 2D chart.

You need to find out which element satisfying given two points.

Those points are (0.7336, 5.9E-13),(0.6357,2.6E-11)

In between 1.E-13 to 1.E-12... There are ten divisions. And the same continued. So you can easily find points on chart. The line which contain these points is represents the element. And it is Ga. By proper locating of points you can be find it P or Ga.