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If 0.52 moles of terephthalic acid are reacted with 0.50 moles of ethylene glycol, what is the number average degree of polymerization at 90 and 100% reaction?
write the net ionic equations for the reactions involved in the testing of each of the following anions
Consider the following specific heats: copper, 0.384 J/g.oC; lead, 0.159 J/g.oC; water, 4.18 J/g.oC; glass, 0.502 J/g.oC. If the same amount of heat is added to identical masses of each of these substances at same initial temperature
Hydrogen bonding is the intermolecular attractive forces between two hydrogen atoms in solution. The hydrogen bonding capabilities of water molecules cause CH3CH2CH2CH3 to be more soluble in water than CH3OH.
bone was dissolved in hydrochloric acid giving 50.0 ml of solution containing calcium chloride cacl2. to precipitate
A sample of an unknown biochemical compound is found to have a percent composition of 45.46% carbon, 7.63% hydrogen, 10.60% nitrogen and the balance oxygen. What is the empirical formula for this compound
Condensation polymers are made using a monomer with two functional groups which split off as the remainder of the two monomers are joined together. Often the small molecule eliminated in the process is water
What is the wavelength of the photons emitted by hydrogen atoms when they undergo n=4 to n=2 transitions in nm?
A mutant hemoglobin has His146 of the beta chain replaced with a threonine residue. predict what the consequence of this mutation might be. specifically:
You already have a solution that contains 10 (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? The pKa of acetic acid is 4.74.
Rank the following carbonyl-containing compounds in order of reactivity towards nucleophilic attack.
What is the vapor pressure at 100 C of a solution containing 1.68g of sucrose (mol weight = 342.30) and 15.6 g of water
Carbonate buffers are significant in regulating PH of blood at 7.40. Calculate the concentration of Carbon dioxide in a 0.200M NaHCO3 at PH=7.40.
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