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A system at equilibrium or striving to reach equilibrium responds in a way that best accommodates or reduces any stress placed upon it. What is this known as in chemistry?
1. Aufbau Principle
2. Le Chatelier's Principle
3. None of these
4. Heisenberg's Uncertainty Principle
given that the normal melting point of cyclohexane is 6.47 degree C and the enthalpy of fusion at this temperature is 2.68 kJ/mol. State any assumptions or approximations made.
A solution contains 4.64g KCl in 178 mL of solution. The density of the KCl solution is 1.14 g/mL. What is the molarity,M, for the potassium chloride solution?
Determine the limiting reactant and the numbers of moles of Cu will be formed If you place .092 mol of iron filling in a solution containing .158 mol of Copper sulphate,?
A silver block, initially at 56.8 degrees C, is submerged into 100.0g of water at 24.7 degree C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 27.8 degrees C
Equilibrium shift of the reaction and the pH of solution, 1. The pressure on each of the following systems is decreased from 5 atm to 1 atm. Which way does the equilibrium shift in each of the following systems?
acetylene gas c2h2 used in welding produces an extremely hot ?ame when it burns in pure oxygen according to the
How many milliliters of 5.40 M H2SO4 are required to react with 4.00 g of solid containing 50.0 wt% Ba(NO3)2 if the reaction is as shown?
What is the molarity of a solution of 14.0 g NH4Br in enough H2O to make 150 mL of solution?
115 grams of KCl is dissolved in 750mL of water (assume density=1.005g/mL). What would be the freezing point and boiling point of that solution assuming the Kf of water is 1.86oC/m and Kb is 0.512oC/m (assume that KCl fully dissociates with no pai..
A sample of sodium metal having a mass of 5.45 g reacts with excess water, and the water is later evaporated. What is the solid product that remains after evaporation, and how many grams of this product are expected to be formed
urea h2nconh2 is used extensively as a nitrogen source in fertilizers. it is produced commercially from the reaction of
What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when the ammonium nitrite in 1.9 L of 1.250 M NH4NO2 decomposes at 25 degrees C? NH4NO2 --> N2 + 2 H2O
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