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Compare the chemical structure of the nylon polymer that has been prepared to the polypeptide trimer of glycine, the simplest of the naturally occurring amino acids. How are they different/the same? glycine (Gly) and Gly-Gly-Gly
If 132 mL of wet H2 is collected over water at 24°C and a barometric pressure of 736 torr, how many grams of Zn have been consumed?
Given the following data H Cl bond enthalpy = +431 kJ/mol, ?Hf HCl(g) = -92.31 kJ/mol
Wind provides a source of renewable energy that is increasingly being tapped. Modern wind tubines can conbert up to 30% of the kinetic energy of the incoming wind blowing through their blades to electicity.
500 mL of 0.1 M NaOH is added to 585 mL of 0.25 M weak acid (Ka = 2.21 x 10^-5). What is the pH of the resulting buffer?
A student mixes 5.0 mL 2.00 x 10-3 M Fe(NO3)3 with 4.0 mL 2.00 x l0-3 M KSCN, and 1.0mL deionized water. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.2 x l0-4 M.
Your friend decides to decrease cooking time for spaghetti noodles by adding table salt to 2.0 L water. How much table salt (NaCl) must be added to the water in order to raise the boiling point by 4.0?C? (Kf = 1.86?C/m, Kb = 0.512?C/m)
A solution is prepared by mixing 0.0300 mol CH2Cl2 and 0.0500 mol of CH2Br2 at 25°C. Assuming the solution is ideal, calculate the composition of the vapor
1.60 M solution(78.0 mL ) is diluted to a volume of 278 mL and a 139-mL portion of that solution is diluted using 175 mL of H 2 O ,water determine the final concentration?
How many moles of Na2SO3 were added to the calorimeter cup if 30.0mL 0.50 M NaOCl and 70.0mL 0.50 M Na2SO3 were combined?
What is the volume of 0.5694 moles of gold? Density of gold is 19.30 g/mL The atomic mass of gold is 196.97.
If 101 g of CaO and 261 g of NH4Cl are mixed, what is the maximum possible yield of NH3?What mass of the excess reactant remains after the maximum amount of ammonia has been formed?
Balance the equation and answer in terms of moles.Chlorine gas can be produced commercially by passing an electric current through a concentrated solution of sodium chloride (brine).
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