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After swimming in a pool or lake, the air feels cool because heat is required to evaporate the water from our skin. How much heat is required to evaporate 20.3 g of water? The enthalpy of vaporization of water is 44.0 kJ/mol.
calculate the concentration of all soluble Hg(II) species. Which Hg(II) species is most prevalent? Assume there are no solids present, that the major ligands present are Cl- and OH-
find the total heat released by the reaction of 100.0 mL of 0.8500M NaOH and 100.0 mL of 0.8404M acetic acid.
when 24.4 ml of 0.500m sulphuric acid h2so4 is combined to 24.4ml of 1.00m potassium hydroxide koh in a coffee cup
if 1.205 g of KHP required 25.25 mL of NaOH solution for complete neutralization, what is the molarity of the NaOH sodium hydroxide solution?
A solution was made by taking 1.250g of KMnO4 and dissolving it in enough water to make 1.000 liter of solution. This solution was used to titrate H2C2O4·2H2O, a very pure substance. In acidic media, the reaction is.
How many moles of solid Ba(N03)2 should be added to 300ml of 0.20 MFE(N03)2 to increase the concentration of the N03 ion to 1.0M. can you please show steps
A 4 g sample of the hydrated crystal Ba(OH)2• χH2O is heated until all the water is removed. The remaining solid weighs 2.17 g. Calculate the formula of the hydrated crystal.
Use the tabulated half-cell potentials below to calculate the equilibrium constant (K) for the following balanced redox reaction at 25°C.
Chlorine gas will react with nitrogen gas to yield NCl (g). At 500 K, I mix 1.00 g of chlorine and 1.00 g of nitrogen in a 2 L flask and allow them to react until equilibrium is reached. At equilibrium, I have 0.44 g of NCl(g) in the flask. What i..
what will the concentration be after 3.00 minutes? B)A zero-order reaction has a constant rate of 3.40×10^?4 M/s . If after 80.0 seconds the concentration has dropped to 3.00×10^?2 M , what was the initial concentration?
The H2O molecule has a bond angle of 105. What type of atomic orbitals does oxygen use to form the two equivalent sigma bonds with H
While in Europe, if you drive 117km per day, how much money would you spend on gas in one week if gas costs 1.10 per liter and your car's gas mileage is 41.0km/L ?
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