As shown +
A Sample of propane C3H8, was completely
burned in air at StP. The reaction occured
C₂ Hg + O₂ CO₂ + H₂O
If 3 mol of CO2
were produced and
all the carbon in the co2 came from
the propane, what was the mass of
the propane Sample ?

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.