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KI (potassium ioidide) is an ionic compound that is soluble in water. Draw a molecular level picture that represents after KI has been dissolved in water.
At a height of 310 km above the Earth's surface an astronaut determines that the atmospheric pressure is about 1.27E-8 mmHg and the temperature is 597 K. Explain how many molecules of gas are there per milliliter at this altitude. Enter the number..
10.00mL of the final solution 0.6M is reacted with surplus BaCl to produce a precipitate of barium sulfate (fw= 233.4g/mol). The dry solid weighs 0397g. Use this mass also dilution volumes, 100-mL to compute the actual molarity of sulfuric acid in..
If 200. mg of fluorine-18 is shipped at 10:00 A.M., how many milligrams of the radioisotope are still active when the sample arrives at the radiology laboratory
Homes in rural areas where natural gas service is not available often rely on propane to fuel kitchen ranges. the propane is stored as liquid and the gas to be burned is produced as the liquid evaporates.
Tarnish on tin is the compound SnO. A tarnished tin plate is placed in an aluminum pan of boiling water. When enough salt is added so that the solution conducts electricity, the tarnish disappears. Calculate the standard cell potential given the fo..
Calculate the mole fraction of Ne in a 25.0-L vessel that contains 6.50 g of O2, 10.6 g of Ar, 20.0 g of Ne, and 3.65 g of He at 75.00C. Calculate the total pressure of the mixture in Question 3.
A mixture of Na2CO3 and NaHCO3 has a mass of 81.1g. it is dissolved in 1.00L of water and the pH is found to be 9.92. what is the mass NaHCO3 in the mixture
A cylinder contains 28.5L of oxygen gas at a pressure of 1.8 atm and a temperature of 298k. How much gas (in moles) is in the cylinder
Calculate the concentration of iodide ions in a saturated solution of lead(ll) iodide. The solubility product constant of PbI2 is 2.7* 10^-6
Does the iron in the Fe(NH4)2SO4 solutions function as an oxidizing agent or a reducing agent. Please explain
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 4 to n = 1. I need an explanation of the formula too.
What information was revealed by this test? Which halide ion was present in the unknown solution? If an additional test is necessary to confirm or complete you identification, state which test you would use, an what information it would provide.
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