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Using the solution CoCl2 and distilled water, how would you prepare 100 mL of a 0.0600 M solution of CoCL2. what absorbance would you expect from the solution from part a, at the wavelength of maximum sensitivity
Which solvent gave the fastest reaction; ethanol, or the ethanol/acetone mixture? Explain how the solvent affects the rate in the SN1 reaction.
Determine the limiting reactant and the numbers of moles of Cu will be formed If you place .092 mol of iron filling in a solution containing .158 mol of Copper sulphate,?
Include activity coefficients in your solubility-product expression. The Ksp of AgI is 8.3 x1017.
How many kJ of energy are required to convert 747 grams of water (liquid) at 23.4°C to steam at 100°C? The following information is given for H2O:
Rank the following ionic compounds in order of increasing attraction between their ions: BaO, BaCl2, and CaO.
A 20.00-mL sample of 0.150 M KOH is titrated with 0.125 M HCIO4 solution. Calculate the pH after the following volumes of acid have been added.
What is the ph of the buffer that results when 12.0 g of NaH2PO4 and 8.00 g of Na2HPO4 are diluted with water to a volume of 0.50 L? ( ka of H2PO4 = 6.2 X10-8, the molar masses of NaH2PO4 and Na2HPO4 are 120.0 g/mol and 142.0 mol respectively)
In the temperature range from 40 K to 90 K, a certain amount of liquid has a temperature dependent heat capacity that is given by Cp = 18.5 J K?1 + T × 0.24 J K?2. Determine the enthalpy change resulting from heating this sample from 58.0 K to 72...
the polarogram for 20ml of solution that was 3.6510-3 in cd2 gave a wave for that ion with a diffusion current of
Find the activity of water in this sucrose solution, given that the vapor pressure of pure water at 25 degree C is 3.167 kPa. (b) If a 2.00 mol/kg aqueous sucrose solution has a vapor pressure of 3.033 kPa at 25 degree C, find the activity and act..
calculate the air velocity necessary to suspend 1.5 cm (screened) particles of shredded aluminum; ps = 2.70 g/cm^3 and r= 0.0012 g/cm^3.
What is the molar mass of the unknown gas? Express your answer to four significant figures and include the appropriate units.
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