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A 1.5 mol sample of PCl5 is injected into a 0.50-L reaction vessel. Calculate the concentration of each gas at equilibrium.
PCl5(g) = PCl3(g) + Cl2(g) Kc = 1.8 at 250oC
Calculate the standard reduction potential for the reaction for the reaction Cu(III) to Cu(II).
Calculate the number of moles of solute present in 75.0 g of an aqueous solution that is 1.50 % sucrose (C12H22O11) by mass.
When 50 grams of iron absorbs 1.0 kJ of heat its temperature increases by forty degrees celsius. What is the molar heat capacity of iron?
The Party Guy, Mr. Balloon, is making animal figures out of long thin balloons that he twists into different shapes. Assume that the balloons are of uniform thickness.
What is the atomic number of the element located in group 16, period 2 of the periodic table. Enter the atomic number.
Calculate the molarity of each of the following solutions(a) 29.0 g of ethanol (C2H5OH) in 545 mL of solution.
A chemist titrates 20.00 mL of 0.2000 M HBrO ( Ka= 2.3 x 10^-9) with .1000 M NaOH. What is the pH? A) Before any base is added? B) When [HBrO] = [ BrO-] C) at the equivalence point
a solution is made by dissolving 20.0 mL CH3CN. what is the mole fraction of methanol in the solution?
consider a completely unstructured dna chain of length 5200 base pairs. based on a random walk model the root mean
Calculate the radius of an iridium atom, given that Ir has an FCC crystal structure, a density of 22.4 g/cm3, and an atomic weight
Calculate the enthalpy change for converting 10.00g of ice at -25.0°C to water at 70.0°C in kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K,.
Automobile air bags inflate due to nitrogen produced in the chemical reaction: 2NaN3(s) 2Na(s) + 3N2 (g)
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