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Calculate the molar concentration of HCl in a solution that has a specific gravity 1.185 and is 36.5% (w/w). Prepare from this bottle 1 L of 0.1 HCl solution. 25 mL of this solution titrated with 30 mL of NaOH. Find the molar concentration of NaOH solution.
The vapor pressure of water at 29 ^circ rm C is 30.0 rm torr. What is the mass percentage of aluminum in this alloy?
Consider the reversible Carnot cycle shown below with 1 mol of an ideal gas with CV = 3/2R as the working substance. The initial isothermal expansion occurs at the hot reservoir temperature of Thot = 400°C from an initial volume of 3.0L (Va) to a ..
Gallium-67 (t1/2 = 78.25 hours) is used in the medical diagnosis of certain kinds of tumors. If you ingest a compound containing 0.015 mg of this isotope, what mass (in milligrams) remains in your body after 13 days? (Assume none is excreted.)
You obtain an unknown acid. You weigh out .856 grams of it and dissolve it in 45mL of water. You titrate it with 27.4mL of .5 M NaOH. What is the equivalent weight of the unknown acid
400cm3 of glycerol, C3H8O3 (density= 1.26 g cm-3) is added to a kilogram of water. What is the mole fraction of C3H8O3 in the solution?
A block of alumium with a volume of 91.1cm^3 absorbs 64.6 j of heat. If its initial temperature was 33.7C, what is its final temperature
Hydrogen gas was collected over water in a eudiometer at 25 C when the atmospheric pressure was 752 mm Hg. What was the pressure of the hydrogen gas?
Choose the answer which gives the electron-domain geometry and molecular geometry which are both correct for TeF4.
Determine the molarity of a solution prepared by dissolving 4.50 mol of NH4Cl in sufficient water to make 2.00 L of solution.
Consider the open ammonia-water system with a partial pressure of ammonia pNH3 = 10?5 atm. What is the equilibrium pH and composition of this solution?
You need to make 50 agar plates. Each plate holds 30mls. Final agar consentration is 2.5%. How much agar powder do you need
How many Joules of energy are stored in 1 pound (454 g) of sucrose? (Assume: Pressure = 1 atm, Temperature = 25°C; the respective ?Hf° for the reactants and products can be found in the thermodynamic table linked above. Show your calculation
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