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Aluminum has a density of 2.699 g/cm3, and the radiu of the aluminum atom is 143 pm. Verify that the metal crystallizes as a face-centered cube.
For each of the following three questions 25.0 mL of 0.100 M pyridine (Kb = 1.70 x 10-9) is titrated with 0.100 M HCl. For each question calculate the pH of the final solution after the indicated amount of HCl has been added. That is, treat each q..
A solution of ethanol (C2H5OH) in water is prepared by dissolving 72.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 300.0 mL of solution. What is the molarity of the ethanol in this solution?
Does the melting point obtained for your product indicate that the sample is indeed phenacetin? What additional evidence can you cite
Consider a 2710-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time of the measurement, what is the uncertainty in the velocity of the car? in mph
Ammonia, NH3, is a stronger ligand than Cl- but weaker than CN-. Complete the balanced equations for the reactions that are predicted to occur
If your electricity comes from a 33% efficient nuclear power plant, how many Pu-239 nuclei are produced as a result of your leaving the light on?
The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common
What would the temp change if the gas were heated with the same amount of energy in a container of fixed volume? (assume the specific heat capacity of N2 is 1 J/gK)
Calculate whether soils in the region are subject to excessive sulphate loading if the only source of sulphate is rainfall and if the recommended maximum is set at 20 Kg SO4-2 ha-1.
The student ended up calculating that he/she has 2.19 ppm of Vitamin B2 in the diluted sample. Calculate the percent of the RDI of Riboflavin satisfied by consuming this tablet
In the determination of the density of a cylinder of aluminum, it was necessary to measure the volume of the sample. The diameter of the cylinder was 38.2 mm and the length of the cylinder was 15.5 mm. What was the volume of the aluminum cylinder ..
The instruction booklet for your pressure cooker indicates that its highest setting is 12.5 psi . You know that standard atmospheric pressure is 14.7psi
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