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A volume of saline solution had a mass of 37.6g at 4 degrees Celsius. An equal volume of water at the same temperature had a mass at 36.2g. What is the density of the saline solution? (Density of water at 4 degrees Celsius is 1.00g/cc)
change in enthalpy at 25 C and 1 atm for the reaction of 5.00 mol of elemental iron with excess oxygen gas?
The osmotic pressures required for this process can be as high as 20.1atm . What would the molar concentration of the tree sap have to be to achieve this pressure on a day when the temperature is 32 C
Predict whether benzoic acid will dissolve in 1.0 M NaOH or 1.0M HCl. Draw the structure of benzoic acid once disolved in your predicted solvent.
Predict whether the reaction below is product-favored or reactant-favored by calculating delta Gdegree from the entropy and enthalpy changes for the reaction at 25 degrees C, H2(g) + CO2(g) yeilds H2O(g) + CO(g), delta H rxn = 41.17kJ S = 42.08J/K
The main protecting groups for nitrogen used in the synthesis of peptides are the Boc, Cbz (Z), FMOC and Trityl groups. Discuss the use of these protecting groups in peptide synthesis, including showing the conditions used for their introduction a..
Write the net ionic equations and determine the standard potentials for the reaction of copper or zinc with tin (IV). Which of the two reactions should be spontaneous
Explain what would happen during the titration if you forgot to add the HC1 or metaphosphoric acid
Calculate the Gibbs energy,entropy, and enthalpy of mixing when 1 mole C6H14(hexane) is mixed wth 1 mol C7
A hydrogen atom initially in the n=7 quantum state emits a photon having a wavelength of 2.16495E-6 m. What is the quantum number of the final state of the atom?
From a calibration curve found a concentration of 11.84 micrograms per mL with a standard deviation of 1.79. multiplied the concentration by 100 to determine the micrograms in the 100mL solution. Converted the micrograms to grams by dividing by 1x..
in nature the element x consists of two naturally occurring isotopes. 107x with abundance 54.34 and isotopic mass
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
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