The standard enthalpy of formation of B2O3(s) is -1263.6 kJ/mol. Use this information, and the table of standard enthalpies of formations e
to find the (delta)H°f for one mole of B5H9(1).

(Delta)H = -9036.6 kJ/mol
2 BgH9(1) + 12 O2(g) -->5 B2O3(s) + 9 H2O(1)

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?