Finding the De Broglie Wavelength of a Hydrogen Atom at Room Temperature

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To calculate the De Broglie wavelength of a hydrogen atom at room temperature (300K), the relevant equation is λ = h/(mv), where h is Planck's constant and m is the mass of the hydrogen atom. The speed (v) can be determined using the root mean square (rms) speed formula for gas particles, which incorporates temperature. At room temperature, the rms speed of hydrogen can be calculated using the equation v_rms = sqrt(3kT/m), where k is the Boltzmann constant and T is the temperature in Kelvin. By substituting the rms speed into the De Broglie wavelength equation, the wavelength can be accurately determined.
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Question: Calculate the De Broglie wavelength for a hydrogen atom at room temperature (300K).

So far, the only equation I know/have used for De Broglie wavelength is lambda=h/(mv). However, I am not exactly sure how to incorporate the information that the hydrogen atom is at room temperature into any equation I know of for figuring out either the de broglie wavelength or the speed of a hydrogen atom. Please give me some hints on how to approach this question! Thanks!
 
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Use the rms speed of the hydrogen atoms for v. ehild
 
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