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The major reason that antiparallel beta-stranded protein structures are more stable than parallel beta-stranded structures is that:
a. parallel ones are in a slightly less extended configuration than antiparallel strands.
b. parallel ones do not have as many disulfide crosslinks between adjacent strands.
c. parallel ones do not stack in sheets as well as antiparallel strands.
d. parallel ones have fewer hydrogen bonds than antiparallel strands.
e. parallel ones have weaker hydrogen bonds between adjacent strands.
a gas has a volume of 1.75 L at -23 degrees Celsius and 150 kPa at what temperature will the gas occupy 1.30 L at 210 kPa
Using data from the Appendix, calculate the temperature where Keq = 1.00. You may assume that deltaH0 and deltaS0 are independent of temperature.
The compound KB5O8·X H2O was analyzed and found to contain 24.6% of water. If the formula weight of this compound is 293.15 g/mol, what is the number of water molecules (X) in the formula?
write a plausible equation to interpret, at the atomic level, what you observed in the reaction of lysol toilet bowl cleaner with .1M AgNo3
What mass of solid sodium fluoride (molar mass = 41.99 g/mol) should be added to 1.0 L of 0.23M hydrofluoric acid to make a buffer with a pH of 2.94? (Ka of HF = 1.36 x 10-3)
Starting with 2-methyl-3-hexanone, show the complete mechanism for the acid-catalyzed formation of the imine using propylamine (Pr-NH2.)
A scientist wishes to prepare a 1L sample with the approximate composition of seawater for use in the laboratory: what reagents would you recommend and what mass of each
Show the reaction energy diagram of two competing reactions, A & B and A & C, for which the kinetic product (C) is different from the thermodynamic product (B). Both reactions follow a one-step mechanism.
Show by flow diagram the reaction equation for how you could resolve a racemic carboxylic acid [(+-)-RCOOH] using an enantiomerically pure amine
the average european woman consumes food with energy content of 7525kj. what is the daily intake in kilocalories or food calories
Why is it particularly important to wash the cupric hydroxide intermediate in the synthesis of cupric acetate (verdigris)? Be specific about what is being removed and why it matters.
Using the data collected for part c on your data sheet and assuming the density of the vinegar is 1.00g/mL, 1) calculate the molar concentration of acetic acid (CH3COOH) in the vinegar sample using the average volume of NaOH.
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