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A solution that is 40% iron (III) chloride by mass has a density 0f 1.049g/ml . What mass of iron (III) chloride in g is present in 2.50 ml of this solution
The concentration of the alkane C20H42 (FM 282.55) in a particular sample of rainwater is 0.2 ppb. Assume that the density of rainwater is close to 1.00 g/mL
how do you know weather it undergoes the E1 mechanism or the E2 mechanism?
How many grams of sucrose must be added to 552g of water to give a solution with a vapor pressure 2.o mmHg less than that of pure water at 20 celsius?
How much PV work is done, if 90 grams of ethylene and 120 grams of HCl are allowed to react at atmospheric pressure and the volume change is -71.2 liters?
Values of the rate constant for the decomposition of N2O5 at four different temperatures are as follows: Determine the activation energy (I got this step right, Ea = 101.15 kJ/mole)
A second assay was performed by making a derivative, ammonium phospho-molybdate, which has visible absorption peak at ~ 400nm. From the Beer's Law plot, estimate the concentration of the unknown solution:
calculated using the energy level equation. A Li2+ ion emitted a photon with a wavelength of 11.4 nm to reach an energy level with n=1. What was the value of n for its initial energy level?
Using the data in your textbook, calculate the concentrations of the molecular and ionic species and the pH in aqueous solution that has a formal composition of 0.0700 M KH2PO4 + 0.5500 M K2HPO4.
What is the relationship between the standard cell potentials, E, for the following two galvanic cell reactions?
The equation for the reaction is 2 NH3 + 3 O2 + 2 CH4 ----> 2 HCN + 6 H2O, What is the percent yield of HCN?
What is the pH of the solution resulting from the addition of 25.0 mL of .01M NaOH solution to 40.0 mL of .01M acetic acid
nickel ion forms the complex ion hexaamminenickel (II) with a formation constant of(Kf) of 5.6 x 10 ^8. initially the complex is formed when .002 M nickel sulfate is added to .10 M ammonia.
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