=10^((0.0031-1.4/( Operating_Temp_C +273))*( Operating_Pressure_kPa /100))

but get this when I enter it?
Lexical error at line 1, column 3.  Encountered: "^" (94), after : ""

From the web page https://sheet.zoho.com/functions
I found the following?

POWER Returns a number raised to a power.

POWER(number; power)

Returns number power, that is number raised to the power of power.

The same result may be achieved by using the exponentiation operator ^:

number^power

Which suggests it should work? Any ideas?????