![]() The "IDEAL" key will appear as one of the "soft" function keys up near the screen, probably. You can't just write "ln Q" as you can with the TI-85 or TI-86. Note that on the TI-89 you must show all multiplications explicitly with "*" andĪll functions must have parentheses. We use "d" instead of just because "d" is easier to enter from the keyboard.Īlso, "ln" is from pressing. Two other equations you might want to save include: Now to save this equation as IDEAL, press Note that we use 'mol' instead of 'n' in the ideal gas law because 'n' might be used for all sorts of other meanings in other equations. This is a bit of a pain, as you have to be careful to use the key prior to each letter. You should see a screen that looks like this: To get started with the TI-89, first enter the solver. ![]() In each case, after pressing the calculator should respond with "done." In addition, we use "d" instead of just because "d" is easier to enter from the keyboard.įREE = dG = dHo - T(dSo - R Q) ![]() We use two versions of the ideal gas constant, 'Rg' and 'R', so that we can have one ideal gas constant (Rg) in units of L-atm/mol-K and one (R) in terms of Joules/mol-K. Note that we use 'mol' instead of 'n' in the ideal gas law because 'n' is not allowed as a variable on some calculators. You will not have to enter them again for the life of the calculator. This is a bit of a pain, as you have to be careful to use the key (for uppercase) and keys (for lowercase).īut the payoff will be worth the trouble, because once these equations are in your calculator, To get started, enter the following with upper/lower case exactly as shown below. You can enter those equations into your TI calculator. See also examples involving equilibrium and Boltzmann distributionĪnother web page you might be interested in is Make sure you read the section corresponding to your calculator. ![]() Note, the TI-89 makes no distinction between upper and lower case. TI-85 or TI-86 prior to each letter, then the key for that letter With the TI-89, these will be lowercase.Į q n (lowercase letters) press on the TI-89 or on the IDEAL (uppercase letters) press prior to each letter, There is a similar chapter for the TI-89. If you have a TI-85 or TI-86, you might want to check out the complete chapter Using Your TI-85, TI-86, or TI-89 Equation Solver Using Your TI-85, ![]()
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