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Explain which of the subsequent three compounds is the most likely to be amenable to purification by sublimation- polyethylene, menthol, or phthalic acid? Explain why one is more amenable than the other two?
The compound Pb3O4 (red lead) contains a mixture of lead(II) and lead(IV) oxidation states. What is the mole ratio of lead (II) to lead (IV) in red lead
CH3OH can be synthesized by the following reaction: CO(g)+ 2H2(g)-> Ch3OH(g) What volume of H2 gas (in L), measured at 754 mmHg and 88 C, is required to synthesize 27.6g CH3OH
determine the mass of the lead in grams if the water level in a graduated cylinder initially at 224 ml rises to 274 ml
A 50.0-mL solution of 0.031 9 M benzylamine was titrated with 0.050 0 M HCl. Calculate the pH at the following volumes of added acid: Va = 0, 12.0, 30.0,0.5 Ve, Ve, and 35.0 mL.
the heat of formation of kcls is -436.7 kjmol and the heat of formation of kclaq 1 m is -419.5 kjmol. determine the
Calculate the APF for (a) the simple cubic and (b) body centered cubic lattices as volume of atoms/volume of cell. (c) Which structure is more dense given atoms of equal mass? The edge length for simple cubic is 2r. Remember that each corner atom ..
What mass of helium was placed in balloon. What altitude does the balloon reach
TiCl4(l)+2H2O(l)=TiO2(s)+-4HCl(g), If you begin with 14.0 mL of TiCl4 (d=1.73mL), what mass of water, in grams, is required for complete reaction
What is the absolute error in mL associated with a 25 mL burette, and what is the relative error % when a 3.25 mL volume is measured with the 25 mL burette
replacement compounds for the Freons have gone into production: HFC-134a (chemical formula: CH 2 FCF 3 ) and HCFC-124 (formula:CHClFCF 3 ) In 1991. Determine the molar masses of these two compounds
140 mL of a .175 M aqueous solution of NH3 is titrated with a .106 M solution of HCl. (NH4+ Ka=5.56x10^-10)
The freezing point of benzene is 5.5oC. What is the freezing point depression of a solution of 5.00 g naphthalene (C10H8) in 444 g benzene (Kf of benzene = 4.90oC/m)?
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