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Each aluminum can weighs 38.5g and contains 12.0 fluid ounces of beverage. The specific heat of of aluminum is 4.10J/gC. The density of the beverage is 1.07 g/mL. How many grams of ice must be melte
Calculate the weight and number average molecular weights as a function of conversion for the linear polycondensation of the aminoacid NH2-(CH2)7-COOH.
Calculate the amount of heat required to completely sublime 50.0 g of solid dry ice at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol
2 mol of a compound is allowed to react in a foam coffee cup that contains 101 grams of water. the reaction caused the temperature of the water to rise from 21 to 24.7 C. What is the enthalpy of the
If NaOH is added to the solution, will the amount of CaC2O4(s) precipitate increase or decrease ? Explain why by discussing the direction of the shift in each equilibrium reaction.
What will the final temperature be, of a mixture made from equal masses of the following: water at 25.0C, ethanol at 35.5C and iron at 95.0C?
The average concentration of strontium ion in seawater is 8.00 mg of strontium ion per kg of seawater. What is the molarity of the strontium ion if the density of the seawater is 1.025 g/mL.
When a metal was exposed to light at a frequency of 4.00× 1015 s-1, electrons were emitted with a kinetic energy of 5.40× 10-19 J. What is the maximum number of electrons that could be
What mass of sucrose should be combined with 455 g of water to make a solution with an osmotic pressure of 8.75 atm at 320 K? (Assume the density of the solution to be equal to the density of the s
The characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. Combustion of 1.95 of ethyl butyrate produces 4.42 of and 1.81 of . What is the emp
Propose a mechanism for the forward reaction that is based on the molecular collision theory and describe each event (elementary process) in that mechanism.
In an extraction of benzoic acid from a three part mixture containing benzoic acid, methyl orange (and previously cellulose). Why would the top layer of liquid in the separatory funnel be clear if
The enthalpy change for melting ice at 0C and constant atmospheric pressure is 6.01 kJ/mol. Calculate the quantity of energy required to melt a moderately large iceberg with a mass of 1.40 million m
A sample of gas with an initial volume of 33.0 L at a pressure of 765 mmHg and a temperature of 325 K is compressed to a volume of 16.2 L and warmed to a temperature of 440 K. What is the final pres
A 120g sample of an unknown substance was heated from 15oC to 30oC. The substance absorbed 458 joules of energy. What is the specific heat of this substance?
What mass of F2 is needed to produce 205 g of PF3 if the reaction has a 79.3% yield?
What is the main overall driving force for any spontaneous reaction or change?
If 10.3 g of magnesium nitride is treated with water, what volume of ammonia gas would be collected at 20 celcius and .989 atm.
Balance the eqaution C4H9SO+O2 !CO2+ SO2+H2O using the smallest possible integers. What is the sum of the coefficients in the balanced equation?
A bottle of wine contains 14.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
A gas-filled balloon having a volume of 6.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°
"isooctane" a fuel used in gasoline engines because it has an antiknock octance rating of 100, has a density of 0.6919 g cm-3. How many pounds would 20.4 gallons of this fuel weigh?
Radon-222 decays by alpha particle production and has a relatively short half-time (3.82 days). Explain why each decay process poses health risks.
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.289 grams of iron and 21.0 mL of 0.433M copper(II) sulfate react to form as much product as possible, how many millimoles (mmol)
Metallic aluminum reacts with MnO2 at elevated temps to form manganese metal and alunimun oxide. A mixture of the two reactants is 67.2% mole percent Aluminum. Find the theoretcal yield(in grams) of