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Which of the following would be expected to have the lowest pH?
0.10 M Ca(NO3)2 0.10 M NaC2H3O2 0.10 M C2H5OH 0.10 M CuSO4 0.10 M HC2H3O2
A 4.90 g nugget of pure gold absorbed 266 J of heat. What was the final temperature of the gold if the initial temperature was 23.0°C? The specific heat of gold is 0.129 J/(g·°C).
Consider the following data: expect a BeF2 molecule to be linear but an SF2 molecule to be angular. Explain the decreasing melting point from NaF to Nai.
Calculate the pH of a solution formed by mixing 65-mL of 0.22M NaHCO3 with 75-mL of 0.15M Na2CO3.
How much heat is required to take a 15.0 g sample of ice with an initial temperature of 0.00oC and raise it to a final temperature of 75.0 oC.
What is the ratio of the conjugate base concentration to the acid concentration, that is, [B-]/[HB] when the indicator switches to the acidic color?
How many grams of dry NH4Cl need to be added to 2.10L of a 0.500 M solution of ammonia, , to prepare a buffer solution that has a of 8.84? Kb for ammonia is 1.8*10^-5.
This experiment focused on a carbonyl group converted to an imine and then to an amine. Explain what spectroscopic techniques you could use to identify the progress of this reaction
A copper wire (density = 8.96 g/cm3) has a diameter of 0.27 mm. If a sample of this copper wire has a mass of 35 g, how long is the wire?
What is the mole fraction of acetone, C3H6O, in the vapor phase from a solution consisting of a mixture of acetone and ethyl acetate, CH3COOCH2CH3, at 30.00 °C, if the total pressure above the solution is 184.6 torr?
A 325 mL sample of solution contains 25.3 grams of CaCl2. Calculate the molar concentration of Cl- in this solution.
Determine which girl has the solutions at the concentrations desired and Girl A dilutes 10 mL stock solution to a final volume of 20 mL. Girl B dilutes 10 mL stock solution to a final volume of 40 mL.
If oxygen gas were collected over water at 295K and the total pressure of the wet gas were 710 mm Hg, what would be the partial pressure of the oxygen
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