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3 years ago

Calculate the wavelength of a football (425g) thrown by an NFL quarterback traveling at 50mph

Chemistry

1 answer:

AnnyKZ [126]3 years ago

7 0

Wavelength is 6.976 x 10^ -35 m

Explanation:

In this, we can use De Broglie’s equation. This equation is the relationship between De Broglie’s wavelength, velocity and the mass of a moving object. In this equation, we are using plank's constant which is 6.626 x 10^-34 m^2 kg/s.

We know that one mile per hour is equivalent to 0.447 M/S.

And One gram is equivalent to 10^-3 kg.

De Broglie’s wavelength = λ ( wave length) = Plank’s constant/ Mass x velocity

λ ( wave length) = 6.626 x 10^ -34/ (425 x10^-3) x ( 50 x 0.447)

= 6.626 x 10^ -34/ 0. 425 x 22.35

= 6.626 x 10^ -34/ 9.498

= 6.976 x10^ -35 m

So, the wavelength of the football will be 6.976 x 10^ -35 m

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Rate law is the expression which is used to express the rate of the reaction in terms of the molar concentration of reactants where each term is raised to the power their stoichiometric coefficient respectively from a balanced chemical equation.

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As, $[H_3O_2^+]$ is not appearing as a reactant in the overall reaction. So, we apply steady state approximation in it.

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Hence, the rate law for the reaction is $\text{Rate}=k'[H+][H_2O_2][Br^-]$

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