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Calculate the pressure exerted by Ar for a molar volume of 1.04L/mol at 475K (a) the ideal gas law and (b)using the van der Waals equation of state
A solid sample containing some Fe^2+ ion weighs 1.062 g. It requires 24.12 mL 0.01562 m KNno4 to titrate Fe^2+ in the dissolved sample to a pink end point
A Vessel of of volume 22.4 L contains 2.0 mol H2 and 1.0 mol N2 at 273.15 K initially. All the H2 reacted with sufficient N2 to form NH3. Calculate the partial pressures and the total pressure of th
the solution at 100 degrees celsius, 10g of water are added, and the solution is cooled to 0 degrees celsius- the number of grams of water required to dissolve a mixture containing 15 g KNO3 and 3.
What would be the expected freezing point of a solution made up of 0.4237g of solute dissolved in 27.3g cyclohexane? The solute has a MW of 173.5 g/mol.
A certain enriched sample of uranium contains 92.000% U-238 and 8.000% U-235. What is the average atomic weight of the uranium atoms in this sample? The isotopic masses of U-235 and U-238 are 235.04
If a 0.568m soloution had a 3.75 C difference in its freezing point from the pure solvent, what is the freezing point depression constant Kfp for the solvent
How many significant figures are contained in each of the following numbers? a) 0.9463 b) 0.08206 c) 6.0255 x 10^23 d) 1.0 x 10^-12 e) 1010
Write the balanced net ionic equation for the reaction between MnO4 - ion and Fe2+ ion in acid solution
Calculate the theoretical yield in grams of methyl piperate from 3.6g of C9H17O5P and using 5% of molar excess of piperonal.
why is tert-butyl methyl ether not expected to be a good solvent for polyhydroxylated carbocycles glucose and fructose
Determine the molecular mass and its uncertainty for CH3CH2COOH. Note: Pay attention to significant figures and use the atomic masses given in the table.
Pure substances include: choose one below: elements only elements and compounds compounds and mixtures elements and mixtures all matter
What is the volume of an object that has a mass of 3.4 g and a density of 2.4 g/mL? choose one below: 1.4 mL 0.71 mL 1400 mL 710 L 14 mL
What is the density of an object that has a volume of 4.5 L and a mass of 54.0 grams? choose one below: 0.083 g/L 12 g/L 1.2 g/L 12 g/mL 83 g/L
Which of the following is an appropriate conversion factor to convert from feet to inches? Choose one: 1 inch / 12 feet 1 foot / 12 inches 12 inches / 1 foot 12 feet / 1 inch 1 inch / 2.54 cm
The specific heat of the liquid is 4.7 J/g.K and the specific heat of the vapor is 2.2 J/g.K. its enthalpy of vaporization is 25.1 kJ/mol. If you heat 4.6 kg of liquid ammonia from -62.0 degrees C t
A sample of clay was obtained from a point below the groundwater table. A moisture content test on this sample produced the following data
Three manufacturers are producing carbonated bottled water. One company introduces carbonate by bubbling carbon dioxide into water until CT=10-3 M (equivalent to adding "H2CO3*" until CT = 1 x 10-3
what is the percent yield of the enzyme recovered in the purified fraction. what is the degree of purification (fold purification
Using the following data for the specific volume of mercury, estimate the error in a temperature reading from a mercury-in-glass thermometer when the actual temperature is 600C
In 1989, the Exxon Valdez ran aground and spilled 240,000 barrels of crude oil off the coast of Alaska, leaving a 0.5 mm thick layer of oil covering the waters of Prince William Sound. Using the con
Find the total time in minutes for a class that lasted 2.76 hours, 353 minutes and 45,980 seconds. Please show me every step.
When a metal at higher temperature is transfer to water at a lower temperature, heat is inevitably lost to the calorimeter. Will this unmeasured heat loss increase or decrease the calculated value o