# Yahoo Web Search

1. ### Will you help me with this units question?

.../m² J = Nxm so.. Pa x N x m^4 / J = ( N /m²) x ( N ) x m^4 / J = N² x m² / J ...

2 Answers · Science & Mathematics · 23/02/2011

2. ### The amount of energy required to excite a CO molecule from n =1 to the first excited state is 46.3 J /mol.?

...you should ask your teacher as to how to convert the 46.3 from J /mol to J because i don't know hot to convert it but the steps in calculating the wavelength are correct.

1 Answers · Science & Mathematics · 02/04/2009

3. ### ideal gas with p(1)=1atm,T(1)=273,15K and n (1)=1Mole. Cv=1,2 J /K*Mole.It is reversible circular process.?

...for an ideal gas Cv = 12.471 J /mol•K – period – the person who...there is additional information there, but here some things you can say from... = w + R∆T (since n = 1) 3→ 1 : Since T...

2 Answers · Science & Mathematics · 12/02/2010

4. ### Recently who has discovered periodic table element whose atomic number is 116?

..., J . F. Wild, D. A. Shaughnessy, N . J . Stoyer; but , very likely, the whole team was much larger, including many...

1 Answers · Science & Mathematics · 12/07/2012

5. ### How do you derive the unit for work which is W=F*D?

...work may also be measured in joules ( J ), the unit of energy 1 J = 1 N .m But a newton is equal to a kg.m/s^2, so the unit for work may also be ...

2 Answers · Science & Mathematics · 25/08/2012

6. ### It is possible to determine the ionization energy for hydrogen using the Bohr equation.?

1/λ = R(1/ n ^2 - 1/m^2) 1/λ = 1.1*10^7(1/(1)^2 - 1/(∞)^2) 1/λ = 1.1*10^7(1 - 0) 1/λ = 1.1*10^7 λ = 9.0909*10^-8m E = hc/λ E = 6.62*10^-34 * 3*10^8 / 9.0909*10^-8 E = 2.1846*10^-18J

2 Answers · Science & Mathematics · 13/12/2012

7. ### is there a simple way to balance chemical equations?

There is a way that will always work; it isn't particularly simple, but it will grind out an answer if trial and error gets you nowhere. Assume...

3 Answers · Science & Mathematics · 29/11/2007

8. ### how do i do this chemistry problem?

d H = n C dT 167 J = n (92 j /mole)(3.5K) n = 0.519 moles of AlCl3 which rounds to 0.52 moles

1 Answers · Science & Mathematics · 30/01/2010

9. ### chemistry help, calculate delta E?

...electron particles like hydrogen : E = -13,6 ( Z^2/ n ^2 ) where Z is the nuclear charge . => delta E... = 1,6.10^-19J => E = 2,62 . 10^-17 J . Good luck : )

3 Answers · Science & Mathematics · 19/03/2013

10. ### Calculate amount of energy released when a mole of He+ ions in the n =5 state fall to the ground state?

... = h*ν = h*c/λ where h is the Planck constant= 6.626x10^-34 Js ; c = speed of light = 2.9979 x 10^8 m s-1 To go from J mol-1 multiply...

2 Answers · Science & Mathematics · 21/07/2012