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1. What volume of nitric acid solution with mass fraction of 16% is required to make make 250ml solution with 0.2mole/l?
if an air bubble is originally trapped in the buret tip but disappears during the titration how does this affect the
Lithium iodide (LiI) has a heat of formation of -272 kJ/mol and a lattice energy of -753 kJ/mol. The ionization energy of Li(g) is 520 kJ/mol, the bond energy of I2(g) is 151 kJ/mol, and the electron affinity of I(g) is -295 kJ/mol.
Describe the reaction and mechanism of solvolysis reaction of tert-butyl bromide in ethanol.
Potassium fluoride is extremely soluble in glacial acetic acid as well as the solutions have a number of unusual properties. In an attempt to understand them, freezing point depression were obtained by taking a solution of known molality and then ..
sulfuric acid is a diprotic acid with the formula h2so4. phosphoric acid is a triprotic acid with the formula h3po4.
The enthalpy change for the reaction between W(s) and C(graphite) is difficult to measure directly because the reaction occurs at 1400degree C, W(s) + C(graphite) -- WC(s). However the heats of combustion of the elements and of tungsten carbide can ..
nonvolatitle organi polymer dissolved in 250mL of benzene has an osmotic pressure of 12.3 mmHg at 25 degree celcius. What is the molar mass of the polymer in units of g/mole?
A 50.0 L steel tank at 20.0 degree C contrains acetylene (C2H2) at a pressure of 125 atm. assuming ideal behavior, how many grams of acetylene are in the tank
Estimate the density of Rb if it crystallizes in a body-centered cubic unit cell and has an atomic radius of 247.5 pm.
where the atmospheric pressure is 1.00 atm. The balloon rises to an altitude of 20,000 m, where the atmospheric pressure is 61 mmHg and the temperature is 210 K. What is the volume of the balloon at 20,000 m?
Problem- At equilibrium the concentrations in this system were found to be [N2]=[O2]=0.100M and [NO]=0.500M. N2(G)+O2(G) = 2NO(G)
The mole fraction of propane in the vapor phase is 0.67 and 0.40 in the liquid phase. Additional pure propane is added to the system and the system is brought again to equilibrium at 10 bar and 323 K. What is the effect of the propane addition on ..
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