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Calculate ΔS if 1 mol of liquid water is heated from 0.00degrees C to 10 degrees C under constant pressure if Cp,m= 75 J/K mol
The melting point of water at the pressure of interest is 0 degreescelcius and the enthalpy of fusion is 6.01 kj/mol. the boiling point is `00 degrees C and the enthalpy of vaporization is40.65 kj/mol. calculate ΔS for the transformation of water (solid) at 0 degrees C to water (gas) at 100 degrees C.
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 11.5g of HF and 25.0 g
At 80 deg. Celsius the vapor pressures of pure liquids X, Y, and Z are 385, 190, and 66 mm Hg, respectively. What pressure must be exerted on the surface of the solution containing one mole of X, three moles of Y, and two moles of Z for boiling to..
The valve connecting a 2.93 L bulb containing a oxygen gas at a pressure of 2.94atm, and a 9.27 L bulb containing carbon dioxide gas at a pressure of 4.52 atm
Draw the lewis structure of CH3NCS including all resonance forms. Assign formal charges.
Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved. To find the mass of water use the density of water = 1.0 g/mL.
Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of H+ and Fe^3+ in the balanced reaction? Fe^2+(aq) + MnO4-(aq) yields Fe^3+(aq) + Mn^2+(aq)
The vapor pressure of the liquid C4H10 is 562.7mmHg at a temperature of 264.6K. The enthalpy of vaporization for this liquid is 22.4kJ/mol. What is the vapor pressure of C4H10 at a temperature of 286.6K in mmHg
you have a buffer system made up of equimolar amount of carbonic acid,H2CO3, and sodium bicarbonate,NaHCO3. Write equations to show how this buffer behaves when (a) HCL is added and (b) NaOH is added.
determine if a redox reaction would occur if you were to mix them in a single solution. For those pairs of substances that would not react, calculate the EOCELL of the unfavored reaction between the two substances.
You have 4 ml of a 0.35 M solution. You take 50 µl of the solution, and add 8 ml of water. How many ‘fold' have you diluted the solution. What is the concentration of the diluted solution
The standard addition method for he trace spectrophotometric analysis of iron is based on dilution of the sample to 500 ml in volumetric flask. two 25 ml samples of this solution are taken
What is the percent yield if 185 grams of SiO2 are made from 328 g of Cr2O3 by the following equation. 3Si (s) + 2Cr2O3 (s) ---> 3SiO2 (s) + 4Cr (l)
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