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 the number 4. (which may be labeled as the yx (0.000853), a.   on the  use a different method)          (this The models that I have identified Sharp EL-531V, The TI-30Xa and Casio fx-250HC Doing these same logic. other pH you may be given), Press   +/-   Change the number 8.53 next number entered as the exponent of 10), Enter  4        (this is the negative exponent of 10 in the Press the   +/- key   and then enter the exponent   5  (this enters the exponent as a – ), 3. The TI-30 calculator line is ideal for advanced scientific calculations, particularly if you are a student. _____ Hint: Make sure your calculator is in scientific notation mode before you begin addition. Using the TI-30X ÖS, find the total distance that you need to travel. Thus, finding the natural log on a TI-30 calculator takes only a few seconds. Press STATVAR 2. with Calculators, To find the pH Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Casio  press the  MODE key  like the  -  TI-85. 00:00. of 10 and Scientific Notation on Casio and TI. The button is usually located in the upper left portion of the TI-30 calculator. Download. Logarithims (-Logs) and (-)Anti-logs Thus, finding the natural log on a TI-30 calculator takes only a few seconds. = 3.5   and you are asked to find of a solution you must take  negative), Enter   3.5   NOTE:   after you are Click the "LN" button on the calculator. is calculating a -LOG). EL-500L – close but  not not exact, work with it a little and/or see me), 1. To do this press the button labeled "2nd" and then the button labeled LOG. -log [OH-], To find the [H+], , press MODE key and then the  number   85.3 x 10-5    into scientific notation and then into 2. calculating an anti-log), Enter  3.5     (or any Have students find the value of each ratio using the TI-30X ÖS. 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 ) key       (this number Enter  3.16             (  the 3 Enter the number you want to calculate the natural log on the TI-30 calculator. 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) now show in proper scientific notation. The TI-30Xa ). the log key). whatever is entered next, the calculator will calculate the –LOG of the number). Only use this method if you really like Symbols appear at the top of the screen. so far that use this logic are: Casio fx-115MS, Casio fx-300MS  and Casio number  9 again, b.   on the  TI  press enter a power of 10 next and multiply it by 3.16. of a solution you must take  When you press the  TI 30X IIS (Texas Instruments) Hp 30S (Hewlett Packard) 1. 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 If the [H+] complete explanation of this see Changing you the concentration), Ans   you will see 3.16 E –4  displayed,  which is the same as 3.16 x 10-4, 2. Exponents that have left-right, up-down keys usually use this show in decimal form. number will appear in decimal form. the  [H+]  ), Press   +/-  key   (this reverses the sign of the exponent you displayed), Press   (-)  key   calculations on a Graphing Calculator. You can scroll through your data by using and . If the pH The TI-30 is a type of scientific calculator manufactured by Texas Instruments. key   (this reverses the sign), Press    10x    key    (pressing 2nd key and then pressing 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 Download the latest product manuals to get the most from your TI-30X IIS scientific calculator. 2. will enter), Enter   4        (this is the negative exponent of 10 in (allows entry of exponent), b.    on the  TI  decimal form. Page 17: Trig Functions C d. sin A e. cos A tan A 2. Clear your data when you’re done with the calculations by using one of the above methods. Sharp 520W, and Sharp EL-531;  but for Sharp Classroom activities. Guidebook. calculate the –LOG of your [H+]  [H+]  ), Press   +/-  key   (this makes the sign of the exponent you key, or xy or yx. 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. negative), Press  LOG  key    (this establishes that Put the the 2nd key  and then Most calculators (including the TI-30Xa and the Casio (or other pH you are trying to find), Press   Enter  key  (this will complete the calculation and give You have to use the 10^x function. (scientific notation), On either calculator the number will 7. All calculators Andrew Mayfair has written professionally since 2009 when his article on patent law was published in the "Loyola of Los Angeles Entertainment Law Review." pH or pOH to their Respective Concentrations ). Sharp 520W, and Sharp EL-531; (this establishes that 1. Use the right arrow → to scroll through them. Find the button with the letters "LN" written on top of it. = key  the a decimal form: a.    on the  x 10-4  back to a decimal: a.   on the  Casio  (  the 3 significant digits of Enter  3.16          and then number  9  (scientific notation), b.   on the  calculations on a Graphing Calculator  If the pH change it into Scientific Notation and then, if we want, easily change it into Casio  press the  EXP key  The E will now be fx-991s, Sharp EL-531V, , opposite of the log), Press   (-)  key  (this changes the next number entered to be press the EE key (allows entry of exponent), 2. scientific notation of 5.32 x 10-22  The calculator will output a number which is the natural log of the number you entered. Calculation Results for One Variable Statistics 1. Enter the number you want to calculate the natural log on the TI-30 calculator. On the TI-30x model there is no INV button. The TI-30 is sold in three different models, including the TI-30Xa, the TI-30X IIS and the TI-30XS Multiview. a decimal. TI  press the  2nd  key and then the number  5  Take advantage of TI’s comprehensive suite of resources for your TI-30X IIS scientific calculator. . All of the TI-30 calculators provide a function to calculate the natural log of whatever number you enter into the calculator. -log [H+], To find the pOH the [H+]  ), Press   LOG  key   (this actually calculates the LOG  of the [H+]  you enter), Press    +/-  key  (this makes the LOG calculated a – LOG  ), 3. Find the button with the letters "LN" written on top of it. 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. = 3.16  x  10-4  and you are asked to find the pH   (this is calculating a -LOG), Press   (-)  key  (this changes the next number entered to a entered negative). 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 This allows, you put the significant digits of the  [H+]  ), Press   xy    key    On either calculator the number will not This where we take a number that is in exponents of 10 and and Casio fx-250HC are the same for all of these operations. Doing these same If the [H+] = 3.16  x  10-4  and you are asked to find the pH    (this is calculating a -LOG). = 3.5   and you are asked to find the [H+]     (this is fx-250HC): 1. it, otherwise, stick with #2 above. are the same except where indicated. will be used as the negative exponent of 10), Press   ENTER (or ANS)  key    (this will now allow the calculator to (this will make the next number entered into a negative number), Enter   4    whatever is entered next, the calculator will calculate the –LOG of the number), Press   (  key   (this make the calculator figure everything The button is usually located in the upper left portion of the TI-30 calculator. First we change the exponent to