Iodine boils at 183°c and it's vapor pressure is 100 mm hg at 116.5°c. if heat needed for fusion is 3.74 kcal/mol and the vapor pressure of its solid is 1 mm hg at 38.7°c, calculate its triple point's pressure and temperature."

What element breaks down into yttrium-90?

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.