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The chlorination of pentane gives a mixture of three monochlorinated products.
Suppose you spread 0.85 g of this oil over the surface of water in a large dish with an inner diameter of 21.6 cm. How thick is the oil layer? Express the thickness in centimeters.
Butane's molar enthalpy of vaporization is 22.44KJ/mol and it's normal boiling point is -0.40C. What is the equilibrium vapor pressure under these conditions?
When 0.455g of Thyroxine is dissolved in 10.0g of benzene, the freezing point of the solution is depressed by 0.3000C. What is the molar mass of Thyroxine?
How many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete.
Isotope 1 has a mass of 107.0 amu and an abundance of 55.9%. Isotope 2 has a mass of 109.0 amu. What is the atomic mass of the element?
An impure sample of potassium hydrogen phthalate, KHP, having a mass of 84.02 g was dissolved in water. How many mol of NaOH and KHP were used in the reaction?
A sample of helium gas occupies 90L at 14 degrees Celsius and 0.956 atm. What volume (L) will it occupy at 155 degrees Celsius and 0.956 atm. Need to convert degress Celsius to Kalvin.
Calculate the molar mass of naphthalene given that a solution of 2.11g of naphthalene in 100g of benzene has a freezing-point depression of 0.85 degrees C.
What volume of 0.200 M K2Cr2O7 would be required to exactly react with 43.9 mL of 0.150 M KI in acidic solution? The products include Cr3+ ion and I2. What was reduced in the reaction and what wa
Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 41% of the lighter isotope (with the balance being 7Li), calculate the average molar mass of the sample.
Using concepts of molecular velocity and collisions of molecules, explain the relationship between pressure & volume and pressure & moles.
Calculate the equilibrium concentration of NH3 and H2S if a sample of solid NH4HS is placed in a closed vessel and decomposes until equilibrium is reached.
How much N2 will be produced (L) when 6 liters of a C6H12O6 solution is degraded to CO2 and H2O? The concentration of C6H12O6 solutions is 200 mg/L.
When 0.1875 moles of NH3 reacts completely with excess HCl, 8.25 kJ of energy is released as heat. What is delta H for this reaction per mole of HN3 consumed?
How many milligrams of carbon monoxide does the average person inhale in an 7 hour period for this level of carbon monoxide pollution?
Calculate the molality of the solution, determine the calculated freezing points, and then calculate the values of the van't Hoff factor i. Kfp(H2O)=-1.86 0C/m.
In nature, the element X consists of two naturally occurring isotopes. Use the given information to calculate the atomic mass of the element X to an accuracy of .001%.
Describe the various strategies for the excretion of nitrogenous wastes employed in higher animals (chordates), both human and non-human.
A metallic solid with atoms in a face-centered cubic unit cell with an edge length of 385 pm has a density of 6.84 g/cm3. Calculate the atomic radius of the metal.
How many metric tons (t) of oxygen are combined in a sample of pitchblende that contains 2.5 t of uranium? Analysis shows that 84.2 g of pitchblende contains 71.4 g of uranium.
Pure gold is 24 kt, whereas 18 kt gold jewelry typically contains 75% gold, 12.5% silver and 12.5% copper (by mass). Estimate the density of this 18 kt gold alloy.
How much diesel fuel does it take to charge a mobile phone? One gallon of diesel fuel contains about 1.44E8 J of useful energy.
The gasoline combines with 340.0 kg of oxygen. What is the total combined mass of the carbon dioxide and water produced by combustion in the engine?
An element has ccp packing with a face-centered cubic unit cell. Calculate the molar mass (g/mol) of the element to three significant figures.