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Question- A sample of ideal gas at room temperature occupies a volume of 12.0L at a pressure of 272torr. If the pressure changes to 1360torr, with no change in the temperature or moles of gas, what is the new volume, V2?
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If the protein has a molecular weight of 15,000, express its initial concentration in umoles/ml and in umoles/ul. If we want 2 umoles of the protein for a reaction, how much of the original solution do we need
The crystal field splitting energy for a complex is 160 kJ/mol. What wavelength of light is absorbed by this complex? A) 750 nm (red light)
An 11.0 gram sample of CaCl2(s) is dissolved in 125 grams of water with both substances at 25.0°C. If the final temperature of the mixture is 39.2 °C.
Dissolving NH4Cl(s) in water is endothermic with a heat of the solution of 15.2 kJ/mol. If a 6.134 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 24.5°C, what is the minimum temperature reached by the solution
the second-order reaction 2 mnco5 mn2co10 has a rate constant equal to 3.0 x 109 m-1 s-1 at 25degc. if the initial
calculate the density of iron fe given that the melatllic radius isrfe 1.24 angstrom and that fe displays a body
For a certain process at 25 degrees C, deltaG = -2.4 kJ and deltaH = +1.2kJ. Calculate deltaS for the process.
The temperature of a sample of water increases from 21.9°C to 45.3°C as it absorbs 5669 J of heat. What is the mass of the sample.
Explain if the 21.45 gram blade metal is heated to 95 degrees C as well as placed into 56.6 grams of water initially at 20.0 degrees C, the final temperature of the water / metal bath becomes exactly 20.8064 degrees.
Using the equation pKa= -log Ka, calculate the Ka from the pH value and the starting acetic acid concentration. Calculate the Ka of acetic acid.
Question- Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.100 M phosphoric acid solution.
If 2.50 g CuSO4 are dissolved in 8.0 x 10^2 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)4^2+, and NH3 at equilibrium
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