Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.)
mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole
h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole
the temperature of the surroundings will:

increase
decrease

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Match the name of the following compound:   mgso4  · h2omagnesium sulfate monohydratemagnesium (ii) sulfate monohydratemagnesium (ii) sulfate hydratemagnesium sulfate hydrate