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X-ray radiation falls in the wavelength region of 1.00E-11 to 1.00E-8 meters. What is the energy of X-ray radiation that has a wavelength of 1.00E-11 m?
Suppose we are dealing with calcium chloride as opposed to the chemical in the video. If a solution contains 70 g of calcium chloride per 100 g of water at 25 degrees Celsius
Suppose that the volume of a particular sample of Cl2 gas is 8.7 L at 895 torr and 24 degrees Celsius. How many grams of Cl2 are there in the sample.
How many grams of HCl are produced according to the following equation, H2 + Cl2 = 2 HCl, when 4.0 g of hydrogen reacts completely.
At 25 °C only 0.0990 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C?
A mixture of amino acids is subjected to paper electrophoresis at pH 6.0. The amino acids present in the mixture are Val, Glu, Phe, Ser, and Lys. Which amino acids will migrate toward the cathode? Toward the anode? Explain.
When 26.0 mL of 0.565 M H2SO4 is added to 26.0 mL of 1.13 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate H of this reaction per mole of H2SO4 and KOH reacted.
What is the enthalpy change for each of the following reactions- 1. Ag+ (aq) + Li(s) -->Ag(s) +Li+(aq) 2. Fe(s) + 2Na+(aq) --> Fe2+(aq) + 2Na(s) 3. 2K(s) + 2H2O(l) --> 2KOH(aq) + H2(g)
When sodium sulfate, Na2(SO4), is dissolved in water, the temperature goes down. How would you describe the energetics of this process?
A block of Iron has a mass of 483 g. What is the mass of a block of Graphite that has the same volume as the block of Iron?
A patient needs to take 875 mg of ibuprofen twice daily. The pills in the bottle are each 250. mg. How many pills does the patient need to take each time she wants the 875 mg dosage? Assume that these pills are scored and can be cut in half if necess..
Calculate the ionic strength of a solution that is 0.05 mol/kg in Na3[Fe(CN)6](aq), 0.02 mol/kg NaCl(aq), and 0.03 mol/kg in NaBr(aq).
The solubility of nitrogen in water exposed to the atmosphere, where the partial pressure of nitrogen is 593 mmHg, is 5.3 × 10-4 M. At the same temperature, what would be the solubility of pure nitrogen, at a pressure of 760 mmHg
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