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Consider the following reactions both occurring in the gaseous state:
1 2 NO2 ↔ 2NO + O2 ΔH = 114 kJ/mole
2 N2 + 3 H2 ---> 2 N H3 ΔH = -92 kJ/mole
Le Chatelier's principle states that a system in equilibrium responds to a change imposed on the system in a way that minimizes the change imposed. Let's look at pressure, temperature and reactant/product changes and how the two reactions would respond assuming they are in sealed containers with some method to add gas(es).
a gas evolved during the fermentation of sugarwas collected. after purification its volume was found to be25.0 l at
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Calculate the pressure (in torr) in the container if all of the methanol is vaporized. (Assume the ideal gas law, PV = nRT).
sulfuric acid is a diprotic acid with the formula h2so4. phosphoric acid is a triprotic acid with the formula h3po4.
the equilibrium pressure of h2 over solid uranium and uranium hydride uh3 at 500 k is 139 pa. calculate the standard
If the electron affinity for an element is a negative number, does it mean that the anion of the element is more stable than the neutral atom. explain
a 24.6 ml volume of hcl solution reacts completely with a solid sample of magnesium carbonate producing 183 ml of
Approximate the heat of reaction for the following equation using thermodynamic tables: CuO (s) + AgNO3 (aq) Cu(NO3)2 (aq) + Ag2O (s)
a student is examining a bacterium under the microscope. the e.coli bacterial cell has a mass of 1.60 fg where a
Calculate the pH of a 750 mL aqueous solution prepared by dissolving 0.12 g of formic acid (HCOOH) in water. [Ka = 1.7 x 10-4 for HCOOH]
What is the pH of a buffer prepared by adding 180 mL of 0.100 M NaOH to 200 mL of 0.100 M acetic acid? (Ka for CH3COOH = 1.8 x 10-5)
What is the second step in the scientific method? 1-to analyze the data, and create a theory to confirm the experimental observations 2- to analyze the data, and propose a tentative hypothesis to explain the experimental observations.
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