Question about ATDEC Telehook Fixed Wall Mount for Flat Panels 20 to 37in Silver

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I have a Protronm37in tv and i cant get no picture every time i try it say Inavid mole so can you tell me where i can get some help i try call sears they dont fix the brand

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I can definitely tell you who can help you fix it, please give me your zip code and I will get right back to you with the information.
Thanks Tim

Posted on Oct 06, 2010

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What is the mass of 0.045 moles of calcium oxide?

Mass of 1 mole of CaO (from periodic table)= 40.078g + 15.999g = 56.077g/mole. Thus 0.045mole*56.077 g/mole = 2.523 g or 2.5 g using significant figures.

Dec 11, 2014 | Cars & Trucks

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Ph calculation

Number of moles [H+] in first solution =concentration of [H+] in mol/L times the number of liters. [C1]=10^(-pH)=10^(-3) mol /L
Number of moles N1=10^(-3) mol/L * 1L= 10^(-3) mol [H+]
Concentration [C2] of second solution
[C2]= 10^(-5.5)=3.16227766*10^(-6) mol/L of [H+]
Number of moles of H+ in second solution
N2=[C2]*10 L =31.6227766*10^(-6) mol of H+
Total number of moles H+ in the new solution
N=10^(-3) +31.6227766*10^(-6) =1.031622777*10^(-3) mol
Concentration of H+ in new solution
[C]=1.031622777*10^(-3) mol / (1+10) L=9.358388878 *10^(-5) mol/L
Resulting pH=-log( 9.358388878 *10^(-5) =4.02787
pH is 4.03

Jun 15, 2014 | Office Equipment & Supplies

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I am changing something from grams to moles using Avogadro's number. When i put it into the calculator, I get the wrong answer. I have set up the problem correctly and I have an answer key. Do i need to...

Why not tell us what you are trying to do?.
n= number of moles
m= mass in g.
M= atomic or molar mass (in g/mol)
n=m/M (in mol)
To enter Avogadro's number you use the EE (*10^x) or Exp
6.02 [EE]23 No 10 should appear.
To calculate the atomic/molar mass use the Periodic table.

Oct 30, 2013 | Texas Instruments TI 30XIIS Scientific...

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How many atoms of hyrdrogen gas in tow moles how

Hydrogen gas is a diatomic substance: Each molecule contains two hydrogen atoms.
A mole of hydrogen gas contains 6.02*10^23 hydrogen molecules, but since each molecule contains 2 hydrogen atom you have 2*6.02*10^23=?
The formula for nitric acid is HNO_3. It contains 5 atoms regardless of the elements
Now, 0.25 moles contain 0.25* 6.02*10^23 molecules oh nitric acid, ans since each molecule contains 5 atoms then 0.25 moles contain 0.25*5*6.02*10^23=? atoms
0.25*1*6.02*10^23 of hydrogen atoms, and the same number of nitrogen atoms and 0.25*3*6.02*10^23 oxygen atoms.

Oct 01, 2013 | Cars & Trucks

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Just got verizon fios and have black bars on all hd channels. I have played with the controls and can not get it to fit on the screen. Any help would be great, thank you.

U have ur tv original remote look for a button like ViewMode,Aspect Ratio,Picture sizes,Picture Zoom.Tries pushes one of these buttons a couple times,u should able to changes ur tv pictures sizes.

Jun 13, 2011 | Philips 42PFL7403D/27 42 in. LCD TV

1 Answer

Clculate the amount of oxygen for the combusion of carbon 188gms calculate the mass of carbondioxied form?

This problem is the type often encountered in a first semester chemistry course, whether in high school or college.

It is very easy to solve if you already understand the following concepts, and if you also have had lots of practice applying them!
Initially, I will assume you already understand the above concepts, except for "stoichiometric calculations." I'd be happy to focus more on the other topics at another time, depending on interest, as indicated by posted questions.

To solve this problem you must be aware of the balanced chemical equation, as follows:
dubblea.jpg Notice that there is one C, one O2, and one CO2.
(For convenience in my post, I am writing the subscripts on the same line,)

"One what?" You might ask. It can be one "molecule" for each the O2 and CO2; and one "atom" of C. For the method of stoichiometry in this problem, we should use one "mole." So, there is one mole of C, one mole of O2, and one mole of CO2. In other words, the PROPORTION of these reactants (C and O2) and product (CO2), is one to one to one, also written one:one:one (or 1:1:1).

As I am assuming you know, these numbers are called the "coefficients" of the balanced chemical equation.

To calculate the mass in grams of O2 (the unknown quantity), we will need only the moles of O2 and the moles of one other substance from the balanced chemical equation. Since we are given the mass of C, we can use the moles of C.

TO WORK A STOICHIOMETRIC problem using a balanced chemical equation, YOU MUST INCLUDE THE MOLES OF TWO SUBSTANCES from the chemical equation in your calcuation, in this case, moles of C and moles of O2. As you know, you can calculate moles of C from the mass (in grams) of C that was given in this problem. You must calculate the moles of O2 by use of the following math expression:

mol O2 = (MOLE RATIO of O2 to C) x mol C.

(Notice that I have used the official abbreviation of moles, which is "mol".)

I will show you how to calculate the MOLE RATIO a moment.

Once you have caculated the moles of O2, you will have only one more calculation to do to calculate the number of grams of O2. Since I am assuming you already know how to calculate grams from moles, I will skip this step until my closing summary.

The MOLE RATIO can be calculated as follows:dubblea_2.jpg The calculated mole ratio will always equal the ratio of corresponding coefficients.

Notice that the mole ratio actually represents the ratio of the coefficients that are in the balanced chemical equation, and is written in the same order as are the calculated (calc'd) moles.

So, you can see that the number of moles of O2 = calculated moles of C.

The moles of C were calculated as follows:

The calculated moles of C = [grams C] / [MW of C] = [188 g C / 12.0 g] = 15.7 mol C

Therefore, there are 15.7 moles of O2, as calculated from use of the math expression (with boxes) shown above.

The wanted GRAMS of O2 are calculated from MW of O2 times its number of moles, as follows:

Grams of O2 = 32.0 g O2 x 15.7 mol O2 = 502 grams O2.

For your convenience as you make conversions among grams and moles, you may use the following memory aid: dubblea_5.jpg

To go from moles to grams, just notice that moles are beside MW, so multiplying them will give grams (moles x MW = grams). If you want to go from grams to moles, notice that grams are over MW, so (grams/MW) = moles. If you should want to calculate MW, you would divide grams by moles, (grams/moles) = MW.

One more tip: When doing calculations, use at least the same number of significant figures (sig figs) in the molecular weights (and atomic weights) as is in the given numerical data. That is, since there are three sig figs in 188 grams of C, use 12.0 as the atomic weight of C, and 44.0 as the MW of CO2. You would obtain the same answer using 12 and 44, but as you may know, following this rule would be more important in other problems in which the digit past the decimal is not zero. This allows proper rounding off of the final calculated quantity.

In Summary

  • Write the chemical equation, and balance it.
  • Use MOLES to do the necessary stoichiometric calculations. Convert grams to moles to make this possible.
  • Multiply the calculated moles of the given amount of chemical compound (or element) by the COEFFICIENT RATIO of the two compounds involved in the problem.
  • Convert moles to grams if grams are asked for by the problem.
  • Round off correctly.
  • Show the answer quantity, which should always show both numerical value AND unit.

Suggestion: Try out this method to other problems involving a chemical reaction. Good luck!


Dec 12, 2010 | Scientific Explorer My First Chemistry Kit

1 Answer

I have a Mitsubishi WS- 55859 projection screen tv and the screen/lamp flashes on and off a couple of times then lamp go off but you can still hear static.The TV is on but not picture is getting to the...

The WS-55859 does not have a "Lamp" it is a 2001 rear projection set with three picture tubes.

Have (if this is the correct model) you tried the self check this set has?

Also do you have this problem on all inputs--tuner, and various rear inputs?

The more you tell me the better I can help you.

Got a IM?


Feb 23, 2010 | Mitsubishi WS-55859 55" Rear Projection...

2 Answers

No sound through ps3 hdmi

I have sound on video 2, and when on a static channel but not on the usual channel 3 which is TV. Just stoppen working one day and cant figure it out... Please help!

Oct 19, 2008 | Televison & Video

3 Answers

RCA Guide plus gold gemstar T.V

I have a guide plus gold gemstar tv and I cant program my direct tv remote or Innovage jumbo remote to operate the tv, can anyone help?

Oct 22, 2007 | RCA F32450 32" TV

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