What were Spanish and British reactions to the Expedition? What was the weather like during the Expeditionâs winter stay in 1804-1805? What kind of boats did the Expedition use? How was translation performed between the Expedition and Hidatsa? Corps of Discovery. Did Meriwether Lewis and William Clark get along? Had the Mandan and Hidatsa ever seen an African-American before? What did William Clark do after the exploration? What did Meriwether Lewis do after the exploration? Why didnât Lewis ever finish the journals for Jefferson? Was Meriwether Lewis murdered or did he commit suicide?
The first law of thermodynamics is simply the general law of conservation. We know that internal energy of U of a system can change through two modes either heat or work. This equation is the first law of thermodynamics dQ = dU + dW .
Because the reaction is run at constant pressure, the change in the enthalpy that occurs during the reaction is equal to the change in the internal energy of the system plus the product of the constant pressure times the change in the volume of the system. = E + P V (at constant pressure). Substituting the first law of thermodynamics into this equation gives the following result. H = (qp + w) + P V. Assuming that the only work done by the reaction is work of expansion gives an equation in which the P V terms cancel.