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what is the total number of joules absorbed by 65.0g of water when the temperature of the water is rasied from 25.0 c to 40,0 c?
What is the value of q when 0.0209 g of water vaporizes at 373 K? The enthalpy of condensation of water at 373 K is -40.7 kJ/mol.
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.
How many milliliters of boiling water are required to dissolve 25g of phthalic acid? If the solution were cooled to 14oC, how many grams of phthalic acid would you recrystallize out?
At 900 K the following reaction has Kp = 0.345. 2 SO2(g) + O2(g) 2 SO3(g) In an equilibrium mixture the partial pressures of SO2 and O2 are 0.165 atm and 0.755 atm, respectively.
two naturally occurring isotopes, Re-185 (mass = 184.935 amu) and Re-187 (mass = 186.956 amu). Calculate the percent abundances of the isotopes of rhenium.
The equation for a Beer's Law plot is y = 2012.5x + 0.003. If the recorded absorbance for an equilibrium mixture is 0.362, what is the concentration of FeCNS2+ (aq)?
Enantiomers and Order of Elution, The enantiomers (R and S forms) of the following chiral alcohols need to be separated by a suitable CHIRAL SEPARATION method.
calculate the concentration of sodium formate that must be present in a 0.10 M solution of formic acid to produce a buffer with a pH of 3.80
A 93.7 g (5.20 mole) sample of water is heated to exactly 94.4 celsius. It is then added to 90.1 g (5.00 mole) of water at 22.5 celsius in a styrofoam cup calorimeter.
Calculate concentrations of H30+ and the pH of each acidic solution. Since HCl is a monoprotic acid, the H30+ concentrations are equivalent to HCl. First do equation: (M con)(V con)=(M dil)(V dil)
Balanced Equation for Sulfathiazole Synthesis - Regarding the synthesis of sulfathiazole from 2-aminothiazole and p-acetamidobenzenesulfonyl chloride,
Calculate the pH of a sodium cyanide solution that is 0.37M NaCN. The Ka for hydrocyanic acid HCN is 4.00E-10.
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