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Calculate the vapor pressure of a solution made by dissolving 75.9 g of urea (molar mass= 60.06 g/mol) in 197.5 mL of water at 35C. (Hint: the vapor pressure of pure water at 35C is given in Chang Table 5.3 Assume the density of the solution is 1.00 g/mL)Answer in the mmHg
Also what is the magnitude of vapor -pressure lowering?
you have 1005.3 g of a bleach solution. the percent by mass of the solute sodium hypochlorite naocl is 3.62. how many
calculate the work required to expand the cell surface. Assume the cell is surrounded by water and that T=310K.
Calculate the standard (25°C and 1 atmosphere) heat of reaction in gram mole of the first reactant on the left-hand side of the reaction equation of the following reactions a. CH4 (g) + 2 O2 (g) ? CO2 (g) + 2 H2O (l) b. CO2 (g)+ H2 (g) ? CO (g) + ..
a sample of he gas has a volume of 900 ml and a pressure 2.50 atm at 298 k. what is the new? pressure when the
Calculate the entropy change for 0.5 mol of an ideal gas confined in 2.0L, which expands when the stopcock is opened, and the gas comes in contact
If a sample with an initial activity of 15 mCi(microcurries) is injected into a patient, what is the activity in 24 hours, assuming that none of the sample is excreted?
At a given temperature, 1.40 atm of H2 and 2.03 atm of I2 are mixed and allowed to come to equilibrium. The equilibrium pressure of HI is found to be 1.305 atm. Calculate Kp for the reaction at this temperature.
according to the following reaction how many grams of ammonia will be formed upon the complete reaction of 30.1 grams
A mixture of O2, CO2, and N2 has a total pressure of 697. torr. In this mixture the partial pressure of O2 is 143. torr and the partial pressure of CO2 is 197. torr. What is the partial pressure of the N2 (in torr)?
Calculate the specific heat capacity of a sample liquid if this 100 g sample of an unknown liquid absorbs 2000 J of heat energy, raising the liquid's temperature from 50 degree Celsius to 70 degree Celsius?
Ascorbic acid (Vitamin C, H2C6H6O6) is a diprotic acid. In a laboratory exercise, a vitamin C tablet was analyzed by titration using 0.125 M NaOH(aq). On the average, it required 29.5 mL of the base to neutralize the acid in the one tablet. How ma..
Hardness in groundwater is due to the presence of metal ions, primarily Mg2+ and Ca2+. Hardness is generally reported as ppm CaCO3 or mmol/L Ca2+.
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