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1. Chem help! Which element has the largest second ionization energy?

K the second ionization energy is the energy needed to remove the...electron has to be removed from a +1 ion In the case of K ., when it loses the first electron to form K + ,it has a...

2 Answers · Science & Mathematics · 25/03/2010

2. Consider the reaction N2(g) + 3H2(g) ↔ 2NH3(g) K = 6.02 × 10−2?

K is equal to the concentration of the product(s) raised to the power of...concentration of NH3. [NH3] = X [N2] = 0.780 [H2] = 0.500 K = 6.02x10^-2 [NH3]^2/([N2][H2]^3) = K Substituting...

3 Answers · Science & Mathematics · 04/03/2009

3. calculate the temperature where K = 1.00 for this reaction. ?

K = 1 only at equilibium so you know that ΔH° and ΔS...look up the ΔH and ΔS. The answer is 725 K . All you need ot know is the formula for tests and that K ...

1 Answers · Science & Mathematics · 22/04/2011

4. easy K chemistry question?

K = [O3]^2 / [O2]^3 K = [O3]^2 / [O2]^3 [O3]^2 = K [O2]^3 [O3]^2 = (1.8 x 10 ^ -7) [0.0012]^3 [O3] = 1.76 x 10^-8 ````````````````````````````````

1 Answers · Science & Mathematics · 05/08/2013

5. what is the rate constant k ?

k =Axe^-Ea/RT find A(collision frequency) thats about 1.28 x10^14 then use the same eq to find k at 60 C ans is 1.46 x10^-3 and hey take R as8.314 n convert temp into kelvins (t+273)

1 Answers · Science & Mathematics · 13/11/2010

6. What is the pressure in atmospheres exerted by a 0.500 mol sample of oxygen gas in a 10.0 L container at 298 K

...constant = .0821 (atm x L / mole x L) T = 298 K V = 10 L Now plug your info... by moles x degrees K ) T = degrees Kelvin (if given...

2 Answers · Science & Mathematics · 01/11/2010

7. explain why potassium usually forms a k + ion, but not a k2+ ion?

...the # of electrons = # of protons. The electron configuration of K is: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1. 1.) Metals in the ...

3 Answers · Science & Mathematics · 29/11/2011

8. Ka and K ?.....?

You have to be careful. Big case K is for an equilibrium constants when talking about ...

1 Answers · Science & Mathematics · 14/03/2008

9. What unit does mK and K stand for?

K is unit for Kelvin, a measurement unit for temperature. m = 10^(-3) , u...and is = 10^(-6) so just like in the mm case, to convert mK/s -> K /s, simply multiply by 10^(-3).

2 Answers · Science & Mathematics · 18/09/2010

10. If the rate law for a reaction is: Rate = k [ClO3-] [I-] [H+]2,?

k = rate / [ClO3-] [I-] [H+]2 k = (M/sec) / [M] [M] [M]2 k = (M/sec) / [M]4 k = L^3 / mol^3 - sec (aka L^3 mol^ -3 sec^ -1)

1 Answers · Science & Mathematics · 30/08/2008