Example 9.14 Estimate the enthalpy change for the combustion of hydrogen
gas:
2H2(g) + O2(g)>2H2O(g)

Asolution is made by dissolving 25.5 grams of glucose (c6h12o6) in 398 grams of water. what is the freezing point depression of the solvent if the freezing point constant is -1.86 °c/m? show all of the work needed to solve this problem.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Word equation for k(s) +h2o(l) yield koh (aq) + h2