Ps2 solutions echellette grating of 2500 blazes per millimeter. a. Calculate the reciprocal linear dispersion of the instrument for first ‐ order spectra. (2 points for set up, 2 points for answer) b. If 2.0 cm of the grating were illuminated, what is the first ‐ order resolving power of the monochromator? (2 points for set up, 1 point for answer)

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but