the [H+] (this is
the [H+] ), Press +/- key (this reverses the sign of the exponent you
calculate the LOG of your [H+]
NOTE: after you are
Take advantage of TI’s comprehensive suite of resources for your TI-30X IIS scientific calculator. are the same except where indicated. TI 30X IIS (Texas Instruments) Hp 30S (Hewlett Packard) 1. other pH you may be given), Press +/-
The TI-30 is a type of scientific calculator manufactured by Texas Instruments. = 3.5 and you are asked to find
Sharp 520W, and Sharp EL-531; (this establishes that
number will appear in decimal form. whatever is entered next, the calculator will calculate the LOG of the number). done above, with calculations where you are not in perfect scientific notation (ex 53.2 x 10-23) press the = key and it will be adjusted to
pH or pOH to their Respective Concentrations ). fx-250HC): 1. is calculating a -LOG). Have students find the value of each ratio using the TI-30X ÖS. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Page 17: Trig Functions C d. sin A e. cos A tan A 2. The TI-30Xa
If the [H+] = 3.16 x 10-4 and you are asked to find the pH (same problem as #2 above, but we will now
7. To do this press the button labeled "2nd" and then the button labeled LOG. fx-991s, Sharp EL-531V,
Casio press the EXP key
Science Fair Project Ideas for Kids, Middle & High School Students, "TI-30XS Multiview Manual"; Texas Instruments; 2010, "TI-30X IIS Manual"; Texas Instruments; 2010, "TI-30Xa Manual"; Texas Instruments; 2010. Use the right arrow → to scroll through them. 1. Enter the number you want to calculate the natural log on the TI-30 calculator. will be used as the negative exponent of 10), Press ENTER (or ANS) key (this will now allow the calculator to
negative), Press LOG key (this establishes that
now show in proper scientific notation. and then number 9 (scientific notation), b. on the
the log key). Enter 3.16
The models that I have identified
Press STATVAR 2. and Casio fx-250HC are the same for all of these operations. All calculators
it, otherwise, stick with #2 above. Doing these same
If the [H+]
x 10-4 back to a decimal: a. on the Casio
The TI-30 calculator line is ideal for advanced scientific calculations, particularly if you are a student. , press MODE key and then the
The calculator will output a number which is the natural log of the number you entered. (scientific notation), On either calculator the number will
Change the number 8.53
The button is usually located in the upper left portion of the TI-30 calculator. If the pH
you must take the (-)anti-log of the pH, To find the [OH-], you must take the (-)anti-log of the pOH, (For a more
_____ Hint: Make sure your calculator is in scientific notation mode before you begin addition. If the pH = 3.5 and you are asked to find the [H +] (this is calculating the -anti-log) Press 2 nd key (this acts like a shift key) Press LOG key (note: LOG is changed to function as 10 x, opposite of the log) Download. ). that have left-right, up-down keys usually use this
Exponents
Download the latest product manuals to get the most from your TI-30X IIS scientific calculator. = 3.5 and you are asked to find
with Calculators, To find the pH
(which may be labeled as the yx
you the concentration), Ans you will see 3.16 E 4 displayed, which is the same as 3.16 x 10-4, 2. whatever is entered next, the calculator will calculate the LOG of the number), Press ( key (this make the calculator figure everything
All of the TI-30 calculators provide a function to calculate the natural log of whatever number you enter into the calculator. Sharp EL-531V,
a decimal form: a. on the
inside the ( before it takes the log of the numbers), Enter 3.16 (the three significant figures from the [H+] ), Press EE key (the calculator now assumes you want to
calculations on a Graphing Calculator. use a different method) (this
TI press the 2nd key and then the number 5
Mayfair earned his Bachelor of Science in biochemistry from the University of California, Davis and his Juris Doctor from the University of the Pacific, McGeorge School of Law. the [H+] (this is calculating the -anti-log), Press 2nd key (this acts like a shift key), Press LOG key (note: LOG is changed to function as 10x
, opposite of the log), Press (-) key (this changes the next number entered to be
negative), Enter 3.5
) key (this number
If the [H+] = 3.16 x 10-4 and you are asked to find the pH (this is calculating a -LOG). Using the TI-30X ÖS, find the total distance that you need to travel. You can scroll through your data by using and .