Use the standard enthalpies of formation for the reactants and products to solve for the AHpa for the following reaction. (The AH of Ca(OH)2 is -986.09 kJ/mol and liquid H2O is -285.8 kJ/mol.)
Ca(s) + 2H2O(l) + Ca(OH)2 (s) + H2(g)
AH = -414.4 kJ
The reaction is?

Identify one disadvantage to each of the following models of electron configuration: dot structures arrow and line diagrams written electron configurations type in your answer below.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.