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Can't answer calls 3 ph. show up but noting I do works

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1 Answer

How can I get this charge off my amazon account? I did not order or receive the book I am being charged for--


    It is always best to call and speak to a real live person, when ever dealing with charges, credit cards, etc. And a membership in Prime, counts as a need to talk to a real person.
    If you call the general help line, please note you will need to answer a series of questions to verify your identity.
    Toll free: 1-888-280-4331
    International: 1-206-266-2992 --- charges may apply

    So, when you call...
    • get the full name of who you talked to
    • the dept they work in
    • any reference, claim or ticket number associated with the ph call.

    • Good Luck

Mar 20, 2015 | Amazon Computers & Internet

1 Answer

Www.tracfone.com/


Please have SOME modicum of patience, Eugene. There are millions of other people trying to do the same thing.

Aug 12, 2014 | Cell Phones

1 Answer

Can you show me how to find the ration between ph and pka?


There is not a simple ratio between these two. See: What is the relationship between PH and pKa - Wiki Answers

wiki.answers.com > Wiki Answers > Categories > Science > Chemistry
when pKa = pH, there is equal concentration of acid and its conjugate base. pKa helps to understand the nature of acid and base like pH: .... Related topics: .pka ...

Jan 28, 2014 | Personalised Grandmas Wish List Print, Not...

1 Answer

How many day if i want to deliver the passport in my house and how many i have to pay thanks..


Hi Rose,

Here is the answer to your question.

*Regular Processing would cost Php 950.00 and it takes 20 working days before you receive the passport

*Rush Processing: Php 1,200.00 (10 working days)

Note: We have an online application of passport whether first time, renewal and lost. Just got to dfa.gov.ph or passport.com.ph to know more information about application of passport

Hope will help you.

Tahnk you for using fixya




Sep 09, 2011 | Health & Beauty

1 Answer

I trying to work out how to use my ti83 plus -What is the pH and pOH of a 1.2 x 10 -3 HBR solution?


First you have pH+pOH=14
Thus pOH=14-pH.
The problem with you question is that you do not specify the meaning of the 1.2 x 10^(-3). Is it the molar concentration of the hydrpbromic acid HBr.

I am going to answer your question but I must make some assumptions. You can imitate the reasonning to obtain your answer, once you have decided or looked up what the numbers mean.

Lets assume that HBr concentration is 1.2x10^(-3) mol/L. Since it is a strong acid, it dissociates completely, releasing 1.2x10^(-3) mol/L H+/H3O+ ion.
Thus the pH is
pH=-log(1.2x10^(-3)).
The result is 2.92

Here is a screen capture of the actual calculation. The minus signs are the change sign (-) to the right of the dot. To enter the power of 10 (represented by the E in display) use the (2nd)(EE) key sequence. To access the content of (Ans) memory, press (2nd) (change sign)

8c2424e.jpg

Mar 07, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

I am trying to get the inverse log from 1x10-4.62


I suggest you reformulate the question. If you are doing pH questions, give the pH and we will show you how to get the concentration. Alternatively, give the concentration and we will show you how to obtain the pH. Keep in mind that in the context of pH questions, pH is restricred to the interval [0,14], and that imposes restrictions on the possible values of the concentration.

If c=concentartion, then
pH=-log(c)
This is equivalent to
c=10^(-pH)

Assuming that this is what you want to do (ie. calculate the concentration)
Press [2nd][log] to access the 10^ function
Screen displays 10^(
Enter the change sign [+/-]
Enter the pH value 4.62
Screen displays 10^( -4.62)
Press [=]
The result is 2.398832919E-05. To 3 significant digits the concentartion is c=2.39E-05 mol/L of H+/H3O+ ion

Mar 07, 2010 | Casio FX-115ES Scientific Calculator

1 Answer

If i have on the display PH, Toaster don´t


The problem was in the switch under the upper shield, the switch was broken. So Thank You very much for Your support. Best Regards, Jan - Czech republic.

Jan 12, 2010 | Roundup VCT-2000 Toaster

1 Answer

Cannot figure out how to use the reverse log on my Staples Textbook display BD-6410 Calculator the pOH is 6.59 I need to use the reverse log to get the answer for the H+ which is the reverse log of 6.59...


Hello,

You should use the equivalence
y=10^(x) is equivalent to x=log(y)

You should not use word that have no meaning. x above is sometimes called antilog, not reverse log.

The relation linkin pH and pOH is as follows
pH+pOH=14, thus pH=14-pOH

Let c[H+] be the concentation (or if you use the hydronium ion, instead of H+ ) c[H3O+] the concentration of hydronium ion)
c[H+]=c[H3O+]=10^(-pH)

pOH= 6.95 thus pH=14-6.95 = 7.05
If pH=7.05 the c[H+]= 10 ^(-7.05) =8.9125E(-8)

pH= 10^ [X to the power] [(-)]7.05
The key/buttom to raise to the power is the one to the right of x squared

Hope it helps

Sep 10, 2009 | Texas Instruments Office Equipment &...

6 Answers

How do i use the inverse log operation on the TI-84


The problem is simple. You're trying to get an [H+] concentration which is obviously going to have a value of some number times ten raised to a negative power. Therefore, you have to insert the negative value of the pH into the 10^(x). When you insert said negative number you will come out with the right answer.
i.e.
The pH of a sample of human blood was calculated to be 7.41. What is the [H+] concentration of the blood?
10^(-7.41) = [H+]
[H+] = 3.9 E-8  
(the answer should only have two sig. figs because the pH has two digits after the decimal.

Jun 10, 2008 | Texas Instruments TI-84 Plus Calculator

2 Answers

Without Memory card Ph. Formatting of Nokia Mobile Phone


reset default code is 12345, you got this option in settings of h/s

Oct 13, 2007 | Nokia 6600

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