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What is the osmotic pressure associated with a 0.0200 M aqueous solution of a nonvolatile nonelectrolyte solute at 75C
How fast must a 143.5 baseball travel in order to have a de broglie wavelength that is equal to that of an xray photon with landa = 79.0 pm? what is the energy level?
A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to the result
A solution was prepared to have a density of 1.20 g/mL and a molality of 2.24 m at 22oC. The Mm of the solute is 63.10 g/mol. (a) What is the molarity of the solution?
The ionization energy of tin is 708.0 kJ/mol. Calculate the maximum wavelength of light that will ionize tin.
Neon crystalizes in a face-centered cubic lattice. It's density is 1.45 g/cm3. What is the edge length of the unit cell? Note: The atomic weight of Ne is 20.2 g/mol, and Na is 6.02 x 10^23/mol
How many many molecules of XeF6 are formed from 12.9L of F2 (at 298K and 2.60atm). Asssume there is an excess of Xe
How many hemoglobin molecules are there in an average red cell? Assume that the molecular weight of the human hemoglobin tetramer is 65 kd. (The answer is 2.74x10^8, but I don't know how to calculate it)
She weighed an empty 4.3 L bulb, then filled it with the gas at 1.60atm and 23.0 C and weighed it again. The difference in mass was 7.9g . Identify the gas.
The final partial pressure of NOBr was 2.5 atm after the following equilibrium was established: 2NOBr(g) 2NO(g) + Br2(g). What is the value of Kp
How many grams of magnesium hydroxide are present in 1.0 L of a saturated solution at room temperature
Elemental exonium (not a real element) consists of two major isotopes Abundance Mass 59% 94 amu 41% 112 amu What is the atomic weight for exonium? Answer in units of amu
If 5.36 103 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
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