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The crystal structure of lithium sulfide (Li2S) is pictured here. The length of the unit cell is 5.88 x 10^2. For this structure, determine:
a) the coordination number of Li and S
b) the number of formula nunits in the unit cell
c) the density of Li2S
How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion? Calculate the molarity of the solution.
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What kinetic energy must the electrons have in order to resolve a protein molecule that is 2.30 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
What is the percent yield of a reaction in which 228 g phosphorus trichloride reacts with excess water to form aqueous phosphorus acid (H3PO3) and 129 g HCl?
write the equation showing the S-trans to S-cis equilibrium of the two conformations for a. (E)-1,3-pentadiene b. (Z)-1,3-pentadiene
This is mixed in with water, but I can't find anything in my book showing examples of this. The following is what I need help with:
what mass of ethylene glycol must be added to 1455 g of water to raise the boiling point to 104.7 degree celsius
Find the volume and the intermolecular force present in ammonia at STP in the following reaction and What is the intermolecular force is present in NH3(g).
Consider following cell. SCE stands for the saturated calomel reference electrode, which has a fixed potential of 0.244 volt. Pt|VOSO4 (0.0184 M), V2(SO4)3 (0.212 M), HClO4 (0.0100 M) || SCE Calculate the cell potential.
Find for the combustion of naphthalene. The heat capacity of the calorimeter, determined in separate experiment, is.
Demonstrate that the moalr enthalpy is equal to the molar energy for a collection of one-dimensilonal harmonic oscillators.
How does the energy of two photons corresponding to a wavelength of 451 nm (blue light) compare with the energy of three photons corresponding to a wavelength of 704 nm (red light)?
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