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Compute the osmotic pressure in torr of a solution containing 18.75 mg of hemoglobin in 15.0 mL of solution at 25.0oC. Explain the molar mass of hemoglobin is 6.5 x 104 g/mol.
The Ksp value for the dissociation of barium nitrate is 0.00464. The molar solubility of barium nitrate is consequently 0.105 M. If the concentration of the barium ion in a saturated solution of barium nitrate was raised to 0.178 M (this is not th..
The excess I3- was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
How do you find the thickness of a piece of tinfoil in atoms with only the piece of foil, metric rulers, metric balance and a graduated cylinder
complete and balance the equations for each of the following reactions: a)KHCO3(s)+HBr(aq)> b)Ca(s)+H2SO4(aq)> c)H2SO4(aq)+Ca(OH)2(s)> d)Na2CO3(s)+H2SO4(aq)>
Using the van der Waals equation, calculate the pressure of 59.5 g of NH3 in a 5.20 L container at 47°C. The van der Waals constants for NH3 are: a = 4.17 L2xatm/mol2, b = 0.0371 L/mol.
A buffer solution consists of 0.100 mol of acetic acid (Pka=4.74) and 0.100 mol of sodium acetate in 1.00 L of aqueous solution . How much will the PH increase if 0.010 mol of NaOH is added to the solution
Hydrogen gas, H2(g), reacts with iodine gas, I2(g), to form HI(g) by the following proposed reaction mechanism with the listed hypothetical activation energies
Aluminum has a specific heat of 0.900 J/g·°C. How much energy is required to raise the temperature of 160. g of aluminum from 20.0°C to 183.0°C?
The excess EDTA from this reaction required 19.77 mL of 0.01883 M Pb2+ standard solution to reach an end point. Calculate [Cu2+] in the unknown
consider the dissolution of an ionic compound such as potassiumfluoride in water.break the process into the following
The 2p-->1s transition in 4He+ is at 329,211 cm-1. Predict the position in cm-1 of the same transition for 3He+. (4He=2 protons+2 neutrons. 3He = 2 protons + 1 neutron)
Chlorine-36 is a B emitter, with a half-life of 3.0*10^5years. How many beta particles are emitted in 1.5 min from a 5.4mg sample Chlorine-36?
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