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An unknown element reacts with iodine to give the iodide, MI3. If 1.443 g of the unknown element gives 21.804 g of MI3, what is the element?
Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.
Consider a molecule having three energy levels as follows: State Energy (cm?1) degeneracy 1 0 1 2 500. 3 3 1500. 5 Imagine a collection of N molecules
Based on the photo, describe some of the physical properties of the elements and the mineral. Are any the same? Are any properties different?
The Ksp of lead(II) carbonate, PbCO3, is 7.40 X10^14. Calculate the solubility of this compound in g/L.
Draw a concentration cell for 0.10 M Cu2+ and 2.0 M Cu2+ cell, show the following on each compartment clearly. a) All the component of each cell, including the concentrations in anode and cathode half cells.
If 60.0 g of H3PO4 is dissolved in enough water to form 175 mL of solution, what is the molarity (M) of the solution
A 2.30 L sample of neon at 5.35 atm is added to a 10.0 L cylinder that contains argon. If the pressure in the cylinder is 7.00 atm after the neon is added, what was the original pressure (in atm) of argon in the cylinder?
Barium sulfate is relatively insoluble in water. At 25 degrees Celsius, only 244 mg will dissolve in 1 L of water. What volume is needed to dissolve 2 g of barium sulfate?
From a consideration of the Lewis structure of the thiocyanate ion, in which carbon has a double bond with both the sulfur and nitrogen atoms, what are the formal charges on the sulfur, carbon, and nitrogen atoms are, respectively
Which is the limiting reagent and the amount of PbSO4 produced if 53.0 g of Pb, 77.3 g of PbO2, and 534 mL of 0.544 M solution of H2SO4 is used?
Horizontally write the molecular orbital configuration for O2 2- , O2, and O2 -. Then state the bond order for each. Which of these compounds and ions are paramagentic and which are diamagnetic
Describe exactly how you will prepare 100mL each of five standard calcium solutions between 5 ppm and 250 ppm. you will be given a 1000 ppm stock calcium solution.
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