How do you know if a reaction is exothermic

The reaction between alcohols and organic acids will form: ketones esters aldehydes cholesterols

What kind of bond is Al2 (CO3) 3

If a certain compound has a formula XCl₃ what is the valency of X?

Which of the following statements about metalloids is true? Metalloids always readily donate electrons in a chemical reaction. The properties of metalloids are constant regardless of the surrounding environment.

identify 2 changes of state that require energy to be used, and 2 changes of state that require the release of energy

A mixture of He He, N 2 N2, and Ar Ar has a pressure of 22.1 22.1 atm at 28.0 28.0 °C. If the partial pressure of He He is 2475 2475 torr and that of Ar Ar is 1049 1049 mm Hg, what is the partial pressure of N 2 N2?

Oceans make the temperaturs of nearby land more extreme ... True or false

The Greek letter D stands for A. Mass of B. Rate of C. Change in D. Heat stored in

14. Two or more substances that are together but do not combine to form a new, pure substance.

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution