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2 years ago

6

One of the wavelengths of light emitted by hydrogen atoms is 6.56 x 10-7 m. Calculate the Energy.

1 answer:

vovikov84 [41]2 years ago

3 0

The Energy of an atom of hydrogen with wavelength 6.56 × 10⁻⁷ m is
3.028 × 10⁻¹⁹ J.

I attached the working out and the answer to the question below.

Please note that C = speed of light, ν = frequency, λ= wavelength, h = Planck's Constant

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2 years ago

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3 years ago

At a certain temperature the rate of this reaction is first order in HI with a rate constant of :0.0632s

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Explanation :

Expression for rate law for first order kinetics is given by :

$k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}$

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k = rate constant = 0.0632

t = time taken for the process = ?

$[A_o]$ = initial amount or concentration of the reactant = 1.28 M

$[A]$ = amount or concentration left time 't' = $1.28\times \frac{17}{100}=0.2176M$

Now put all the given values in above equation, we get:

$0.0632=\frac{2.303}{t}\log\frac{1.28}{0.2176}$

$t=28s$

Therefore, the time taken for the reaction is, 28 s.

8 0

2 years ago