The average speed of a gas molecule in meters per second is Vaug 8RT where the temperature T is given in kelvins, the M molar mass M is given in kilogram-moles, and R = 8.31. dvaug Calculate dT at T = 400 K for krypton, which has a molar mass of 0.0838 kg/mol. (Use decimal notation. Give your answer to four decimal places.) d. dT Vaug = m/(s K)

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