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1. ### what element is illustrated below: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z?

is this one element or is it a list of elements? need more clarification :)

2 Answers · Science & Mathematics · 03/08/2011

2. ### what is the order of the reaction with respect to A ?

1 Answers · Science & Mathematics · 23/04/2013

3. ### Given the following reduction potential for potassium, which statement is correct?

...gt; K+ + e-, E= 2.936 V It means Kalium as neutral element (K) is so easy to be ... we say, K is a good reducing agent (reductor...

1 Answers · Science & Mathematics · 03/03/2009

4. ### Why will hydrogen and oxygen ignite when passed through a platinum gauze?

Platinum is a catalyst in this reaction. Here the role of platinum is to get the ...

2 Answers · Science & Mathematics · 27/04/2013

5. ### How to plot a Arrhenius graph only using 2 temperatures?

...s assume 1st order) reaction... n A + m B → n ' C + m ' D so that k(T) = v / [a]^i [b]^j assuming [a]^i [b]^j is constant and v is ...

1 Answers · Science & Mathematics · 25/03/2008

6. ### what is the average velocity of atoms in 1.00 mol ofkrypton (a monatomic gas ) at 347 k ? for m, use 0.0383kg.?

.../πM So v_rms = √(3 * 8.314 * 347/0.0383) ~ 475.4 m/s v_hat = √(8 * 8.314 * 347/3.1415 * 0.0383) ~ 438 m/s. A lot depends on what is meant by the average. You can...

1 Answers · Science & Mathematics · 23/06/2015

7. ### What is the expected freezing point of a 50/50(V/v)% ethylene glycol/water solution? Kf = 1.86 K/m for water.?

...mol/1000 gm H2) mEW = 17.86 m ΔT = Lf * mEW = 33.2 °K = 33.2 °C Since the ...answer. This answer agrees with a reference table (see ref 1). A similar reference...

1 Answers · Science & Mathematics · 02/03/2008

8. ### Which atom in each of the following pairs has a larger radius?

Hi friend, a) K b) V c) Ta d) Ba I hope it helps email...if you have some other questions like this one I'm from Iran. ibiologiophile@gmail.com to Umar I...

4 Answers · Science & Mathematics · 13/06/2011

9. ### 1.3 m/s is a typical walking speed. At what temperature (in K) would nitrogen molecules have an rms speed of?

V^2 = 3RT/M R = 8.314 J/K*mol T is unknown V = 1.3 m/s M is 14 g/mol I think you may have had a problem with the square root, or you used the wrong constant for R (i.e...

1 Answers · Science & Mathematics · 21/06/2012

10. ### A sample of gas occupies 0.308 m^3 at a temperature of 325 K and a pressure of 149 kPa. Calculate the number?

PV=nRT P=149kPa V=.308 m3 R=8.314 m3 pa / mol K T=325k 149,000 X .308=n 8.314 X 325 45892=n 2702.05 n=16.984

3 Answers · Science & Mathematics · 04/06/2008