You add an excess of solid in 370 g of water. You measure the freezing point and find it to be –0.015°C. What is the of the solid? The molal freezing-point depression constant for water is 1.86°C kg/mol. Assume a solution density of 1.0 g/mL. =

Type the letter that represents the correct location for each particle type below.

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 what type of reaction is represented by the previous two examples?

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘