If 11,243 atoms of helium pass through a 3 square meter plate area every 1.2 hours, and if this flux is constant with time, compute the flux of helium in units of atoms per m2 per second. Answer Format: X. XX Unit: 1/(m2 s)

219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.

The polymer used for the nonstick surface of cooking utensils is 24.0%c and 76%f by mass. what is the empirical formula of this polymer?

If 22.5 of nitrogen at 748 mm hg are compressed to 725 mm hg at constant temperature. what is the new volume?