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What is the volume in the beaker with the aqueous solution of a nonvolatile nonelectrolyte when equilibrium is attained, assuming ideal behavior?
A mixture of NaCl, SiO2, and CaCO3 is separated following the procedure given in this experiment. Indicate how each of the following procedural changes would affect the amount of the specified subst
A weather baloon is filled with 195.0 L of He and launched from sea level. The baloon is designed to continue its ascent to an altitude of 30 km. If the atmospheric pressure at 30 km is 28.0 torr an
The student next added 3M KOH solution to the aqueous solution and Mg(OH)2 precipitated. After filtering the solution and drying the precipitate, the student recovered 1.10g of Mg(OH)2.
The solubility of N2 in blood at 37 ºC and at a partial pressure of 0.80 atm is 5.6 x 10-4 mole/L. A deep-sea diver breathes compressed air with a partial pressure of N2 equal to 4.0 atm.
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile's engine cooling system. If your car's cooling system holds 6.10 gallons, what is the boiling point of the solu
What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.245 M in sodium chloride and 0.047 M in magnesium sulfate?
An ice cube that is 25.00 g (temp -20 C) is placed into 225.00 g of H2O that is 22 degrees C. What will the temperature be when the ice cube has just melted. Use 4.184 J/K*g for the specific heat ca
Suppose that the microwave radiation has a wavelength of 12.4cm . How many photons are required to heat 235 mL of coffee from 25.0 C to 62.0 C?
A microwave oven operates at 2.40 GHz. What is the wavelength of the radiation produced by this appliance? in nano meters
Hospital X-ray generators emit X rays with wavelength of about 15.0 nanometers (nm), where 1nm=10^9-m. What is the energy of a photon of the X rays?
A second order reaction in ethanoic solution has a prefactor of 10^13 hz and an activation energy of 0.9 eV. Draw an Arrheniusplot over the range of possible reaction temperatures(between thefreezin
Use the kinetic-molecular theory to explain what happens as an unknown solid is heated from below its freezing point to beyond itsboiling point.
What must the total molarity of solutes if the sap rises tothe top of the tree by osmotic pressure at 20oC . Assumethat groundwater woutside the tree is pure water and that the density of the sap is 2
If you run two 45 watt headlights for 2.0 hours using your battery as the energy source, how many grams of lead sulfate will be produced in the battery?
When aqueous solutions of lead (II) ion are treated with potassium chromate solution, a bright yellow precipitate of lead(II) chromate, PbCrO4, forms.
If phosphoric acid is pour into an aluminum can, what would thereaction look like? We did this in lab to see if aluminum ofa soda can would leach into the soda, which was substituted with H3PO4 solu
How much energy (in calories) must be added to raise the temperature of 25.0g of ethanol (C2H5OH) from (-10.0 C) to the liquid was completely vaporized?
A saturated solution of PbCO3 contains 0.00033 g PbCO3 in 100. g of water. What is this concentration in partsper million?
Suppose the half-life is 20.3 s and the reactantconcentration is 0.0776 M 57.8 s after the reaction starts. How many seconds after the start of the reaction does it take for the reactant concentrati
Calculate the equilibrium constant K'. ( the hydronium ionconcentration is included in the constant. That is K'= K. [H3O+]for the reaction at 25* C and pH= 7.0)
Compound A has a room-temperature solubility of 20.2 gL-1 in a certain solvent, while compound B has asolubility of 11.8 g L-1 in the same solvent at room temperature. An extract from a plan
The quantity of Cl1- in a water supply is determined bytitrating the sample with Ag1+. How many moles of chloride ionare in a 10.0 g sample of the water if 20.2 mL of 0.100 M AgNO3 is required to re
A compound consists of 60.0% carbon, 26.7% oxygen, and 13.3%hydrogen. It's molecular weight is 60. What are the possible structures for molecules of this chemical compound?
An ice cube melts at room temperature and water freezes attemperature of 0 degree cel. and below. from thesefacts, what can you infer concerning the relationship between the temperature of a system