Erroneous value and units in calculated result

[AG_2749682]

I ran into a problem where Mathcad 8 (or 4 which I used previously) does not show the correct value or units for a calculation. I would send you the file with the calculations but I see no way to do so with this form. This may be the only error that I have detected while running Mathcad over the years.

[ppal]

You can attach files at the bottom of the form

[AG_2749682 · Accepted solution]

I am attaching file which shows my problem.

[ttokoro]

Change the label ow R in W to variable. Then you get the W you want.

[ppal]

Fixed - hopefully

[Werner_E]

As ttokoro already noticed - somehow the "R" in the definition of your variable W is not labelled as "Variable" but rather as "Constant" and so its interpreted as the built-in molar gas constant.

You can tell it by the different (green) color.

Its not sure how or why Primes autolabelling failed.  Sometimes wrong labels are applied when you edit a region multiple times.

Solution, as ttokoro already wrote, is to manually label this "R" as "Variable" so your variable R is used for the calculation and not the predefined constant. The color of the "R" should turn from green to black (if you did not change the default color settings).