Chemistrt

I'm unsure of how to rearrange Balmer's equation to solve for n2. The equation is 1/lambda= R(1/2^2-1/n2^2)

  1. 👍 0
  2. 👎 0
  3. 👁 311
asked by Kelsey
  1. If you have a problem with numbers, the easy thing to do is to leave the equation as is, substitute the numbers, the solve for the unknown in the equation. If you get stuck, post the numbers and someone can help you through.

    1. 👍 0
    2. 👎 0
  2. I don't have to plug on any numbers I just have to get n2 by itself, but I don't know how to isolate it.

    1. 👍 0
    2. 👎 0
    posted by Kelsey
  3. Let's let lambda be L and drop the n1 and n2. Since n1 = then that squared is 1/4 and n2^2 will just be n^2

    1/L = R(1/4 - 1/n^2)
    1 = RL(0.25-1/n^2)
    1 = RL[(0.25n^2-1)/n^2]
    n^2 = RL(0.25n^2-1)
    n^2 = 0.25RLn^2-RL
    n^2-0.25RLn^2 = RL
    n^2(1-0.25RL) = RL
    n^2 = [RL/(1-0.25RL)]
    and take the square root of that. Check my algebra. I slip more signs and drop more coefficients than you can imagine.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    The Rydberg equation (1/lambda=R/ni^2–R/nf^2) can be treated as a line equation. What is the value of nf as a function of the slope (m) and y-intercept(b)? by GC 1/lambda = R/ni^2–R/nf^2 y = mx + b (standard form) of a linear

    asked by bubble on January 15, 2010
  2. Chemistry

    E=hc/lambda How would I rearrange this to be able to solve for the other variables (c or lambda)??????? Please and thank you.

    asked by Corin on November 29, 2016
  3. Physics

    A long thin rod lies along the x-axis from the origin to x=L, with L= 0.830 m. The mass per unit length, $\lambda$ (in kg/m) varies according to the equation $ \lambda = \lambda_0 (1+1.110x^3). The value of $\lambda_0$ is 0.200

    asked by Kid on August 24, 2017
  4. Chemistry

    How can i rearrange this Clausius-Clapeyron equation so that 1/T2 is on one side? In P2/P1=delta H vaporization/R (1/T2- 1/T1) I am trying to find at At what temperature does acetone have Pvap= 111 mm Hg. Acetone, a common

    asked by Sar on August 23, 2010
  5. maths

    how would i solve the differential equation dx/dt=-kx^2 i.e. solve for x as a function of t. I've been told to rearrange the equation to yield dx/x^2=-k dt but what can and should I do now?

    asked by xX_Supaman_Xx on December 14, 2007
  6. Math

    The graph of the equation y=4-x consists of all the points in the coordinate plane that satisfy the equation. List 5 points that satisfy y= 4-x. Also, what do you think is the minimum number of points you need to plot in order to

    asked by victoria on November 21, 2006
  7. Chemistry

    Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the

    asked by Andy on November 10, 2013
  8. Chemistry

    When working with the combined gas law you would use the following equation: (P1)(V1)/T1 = (P2)(V2)/T2 I am not quite sure how you would rearrange this equation to solve for T2. Please Help ! :)

    asked by Anonymous on January 7, 2009
  9. Algebra

    Equation: RCF=NCF/(1+Pi)^t Can somebody show me how to rearrange the equation to solve for Pi.

    asked by Tom on November 7, 2008
  10. General Chemistry

    Question 1: In the Balmer-Rydberg equation, what value of m is used to determine the wavelengths of the Balmer series? m=? Question 2: List a possible set of four quantum numbers (n,l,ml,ms) in order, for the highest energy

    asked by Sophie on October 25, 2009

More Similar Questions