reply to Q " Physics hard... can't get it right"

kk this is what i did
V=strt(3*k=8.31*T=1365)/m=5.32*10^-26

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  1. See my previous answer. Your k is not correct. You used R instead, in Joules/mole*K units. There is a formula for Vrms that uses R, but the denominator becomes the mass (in kg) per mole

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