Hi,(adsbygoogle = window.adsbygoogle || []).push({});

I wasn't sure where to post this. I have a chemistry homework problem, which is not necessarily that hard, but it wants me to put values into my TI-84 Plus. I will not explain the problem too deeply, but it's about reaction time, volume, and concentration (mol/L).

I am given a table of the volume of gas, at certain time intervals.

t (s) V (cm^3)

10 12

20 22

30 34

... ...

And so on... It is a long table with 20 time intervals and 20 volume values.

From volume, I have to calculate the concentration.

Eventually, the concentration C can be calculated with:

C = (8 - (12 / V))/10

(I had to find this equation myself)

I can easily plot C as a function of V. But the book wants me to plot C as a function of time (t) into my graphing calculator.

I have already added all the t and V values into a table, using the STAT option. t in L1, and V into L2. I have entered C as a function of V, into the "Y=" menu, with C as Y1 and V as x. I could of course get C as a function of time, if I could write V as a function of time, and then substitute V for t. But there is no definitive function that describes the shape of the V/t curve.

Then I tried to insert L2 for X, for the Y1 function, but that didn't work either.

I know I can always manually look up all the values and make a function of time myself, but that would take forever. I can do this once, but problems like these come back in the future, I'd father find a quicker way.

Is there a way to plot Concentration as a function of time, using the table that is given?

Thank you in advance.

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Calculators TI-84 Plus stats as function

Have something to add?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**