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In Europe, gasoline efficiency is measured in . If your car's gas mileage is 34.0 , how many liters of gasoline would you need to buy to complete a 142- trip in Europe? Use the following conversions
The osmotic pressure of this solution is 0.750 atm at 25.0 C. what is the molecular weight of the unknown solute ( R= 0.0821 L.atm/K.mol)?
What is the formula of a solid containing carbon that is a) molecular b)ionic c) network covalent d) metallic for these arent there more than one right answers?
Consider a particle confined to a two-dimensional box where the length in the x dimension is a, and the length in the y dimension is b. Calculate the probability that the particle in the ground state
Predict the products from the reaction of the following compounds with excess H2CrO4 in the presence of sulfuric acid
A 0.0355 g sample of an unknown molecular compound is dissolved in 1.000 g of liquid camphor at 200.0°C. Upon cooling, the camphor freezes at 157.7°C. Calculate the molar mass of the unknown
if equal masses of aluminum and chronium are trasnferred in equal volumes of water in separate graduate cylinders, which graduated cylinder would have the greatest volume change?
What mass of naphthalene must be dissolved in 24000 grams of benzene to give a solution with a freezing point 3.00 celsius below that of pure benzene?
A quantity of 2.00 × 102 mL of 0.862 M HCl is mixed with 2.00×102 mL of 0.431 M Ba(OH)2 in a constant-pressure calorimeter that has a heat capacity (empty) of 453 J/°C.
Ethylene glycol, HOCH2CH2OH, is effective as an antifreeze, but it also raises the boiling temperature of automobile coolant, which helps prevent loss of coolant when the weather is hot.
The water at the gas-collecting port is assumed to be 25C, but it is actually 15C. How will this error affect the reported mass of aluminum in the sample?
A 25-g sample of an alloy at 98 C is placed in 50. g water at 17 C: If the final temperature reached by the alloy sample and water is 27 C, what is the specific heat (cal/gC) of the alloy?
wride the balanced final redox reaction. Identify the oxidizing agent, the reducing agent, the species being oxidized, and the species being reduced
The value of Kf for cyclohexane is 20.0°C/m, and its normal freezing point is 6.6°C. A mass of 1.604 g of a waxy solid dissolved in 10.000 g of cyclohexane results in a freezing point of 4.4
This method requires 12 N sulfuric acid. Concentrated sulfuric acid is 18 M. How was the acis for this experiment prepared from the concentrated acid.
What is the wavelength of light required to induce a transition from the ground state to the rst excited state?
What is the expected freezing point of an aqueous solution of 2.62 kg of nitric acid, HNO3 , in a solution with a total mass of 5.91 kg? Assume that the nitric acid is completely ionized.
Upon cooling, the solution freezes at a temperature of 74.8°C. What is the molar mass of the unknown compound?
A mixture contains 76.5% nacl and 6.5% mgcl2 and 17% na2so4 by mass what is the molarity of cl- ions in a solution formed by dissolving 7.4 grams of the mixture in enough water to form 600 millilit
A student placed 15.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-mL mark on the neck of
The space shuttle orbiter utilizes the oxidation of methyl hydrazine by dinitrogen tetroxide for propulsion.
What is the resonance energy of C6H6 and how do you find it?
A gas sample containing 1.56 mol at 25°C exerts a pressure of 390. torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800.
Another wood sample prepared from an object recovered at an archaeological excavation gives a decay rate of 0.184 disintegration per second per gram of the sample. What is the age of the object?
What is the boiling point of a solution of 8.69 g of the electrolyte sodium acetate, NaCH3COO, dissolved in 15.00 g of water?