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