Task $2($of $3)$

Antoine's Equation describes the relationship between vapor pressure and temperature for a pure

substance. The equation is:

$lo{g}_{10}(P)=A-\frac{B}{(C+T)}$

$P=$ vapor pressure $(mmHg)$

$T=$ temperature $(C)$

$A,B,C$ are constants that depend $on$ the substance

A$,$ B$,$ C are constants that depend on the substance

The table below lists the constants, A$,$ B$,$ and C$,$ for three substances. It also lists the

temperature range $($Tmin to Tmax$)$ for which Antoine's equation is valid.

Create a Python script, HW$-$W$2$D$2\_$Task$2\_$UCusername, to do the following:

Prompt the user to specify one of the three substances listed $($Methanol$,$ Butane, or

Octane$)$

Validate the user's entry. If invalid, ask repeatedly for a valid substance.

Create a list of twenty temperatures evenly spaced from Tmin to Tmax given in the table

above. Note that this list of temperatures will be different for each substance.

Using Antoine's Equation, calculate and create a list of the vapor pressures

corresponding to each temperature in the list.

Output each temperature and its corresponding vapor pressure. Format your print

statement so that any floating point numbers are printed with $3$ places behind the decimal.

Include appropriate units in your print statement. Note: You will likely want to use a

loop for this $-$ don't just separately output the entire list of temperatures followed by the

entire list of pressures.

Sample Output $($Partial$)$:

Substance: Methanol

Temperature $=-16\mathrm{.}000(C)$; Pressure $=10\mathrm{.}128(mmHg)$

Temperature $=-10\mathrm{.}368(C)$; Pressure $=15\mathrm{.}126(mmHg)$

Temperature $=-4\mathrm{.}737(C)$; Pressure $=22\mathrm{.}157(mmHg)$

Temperature $=0\mathrm{.}895(C)$; Pressure $=31\mathrm{.}879(mmHg)$

Temperature $=6\mathrm{.}526(C)$; Pressure $=45\mathrm{.}108(mmHg)$