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Problem- Europium (Eu) is used in older television screens to give a red color. The metal can be prepared by electrolysis of molten europium(III) chloride; chlorine gas is a by-product.
Write and balance the equation for the reaction.
Your respond must be supported by illustrations, Please answer with work shown to receive points
While coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2), Explain which is responsible for the acid rain phenomenon.
A Solution is made by dissolving 8.5 grams of NaOH in 2.3 L of water. What is the molarity of the solution?
A reaction mixture initially contains 4.2 mol ZnS. a. How many moles of oxygen will be required to react with ZnS b. Assuming there is enough oxygen,
How much PV work is done in kilojoules delta E if 89.5 g of ethylene and 125 g of HCL are allowed to react at atmostphere pressure and volume change is -71.5 L
Problem- If 0.0280 mol of CaCl2 is dissolved in water to make a 0.710 M solution, what is the volume of the solution?
a chemistry student dissolved 500 grams of alcl3 in 2750grams of h2o. the resulting solution had a density of1.015 gml.
Assume in state A, V=4.00dm&3, p=1.00atm, t=300K, Va=10Vb, Pc/Pb=5 and Cp,m= 7/2R. Determine the change in entropy of the system and the surroundings for each step of the cycle.
Sodium chloride reacts with sulfuric acid to produce hydrochloric acid and sodium sulfate. How many grams of hydrochloric acid can be prepared from 393 g sulfuric acid and 234 g sodium chloride
When sufficient quantity of heat has been added to reach the boiling point of a solution, what happens to any additional heat added? a) additional heat is used to maintain the boiling of the liquid as the process is endothermic
Question- What is the molar mass of a nonelectrolyte if 6.02 grams dissolved in 30.0 grams of benzene freezes at -1.55 °C? The freezing point of pure benzene is 5.50 °C and the freezing point depression constant, Kfp, is -5.12 °C/m.
You then tore off the corner, inserted filter paper in the funnel, and filtered your BaSO4 precipitate. How does this affect the percent sulfate you calculated; too low, too high, no effect
a metal sample weighing 45.0 grams and at a temperature of 99.1 degrees celsius was placed in 38.6 grams of water in a
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