At 379 K, this reaction has a K c value of 0.0496 . X ( g ) + 3 Y ( g ) − ⇀ ↽ − 2 Z ( g ) Calculate K p at 379 K. Note that the pressure is in units of atmosphere (atm).

Use the standard enthalpies of formation for the reactants and products to solve for the δhrxn for the following reaction. (the δhf of c2h4 is 52.26 kj/mol, co2 is -393.509 kj/mol, and h2o is -241.818 kj.) c2h4 (g) + 3o2(g) 2co2 (g) + 2h2o(g) δhrxn = the reaction is .

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.