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Silicon carbide, SiC, also known as carborundum, is an important industrial abrasive made by the high temperture reaction of SiO2 with carbon: SiO2 + 3C--> SiC + 2CO In one process 5.05 g of SiO2 (MW=60.09 g/mol) is treated with 3.35 g of carbon (MW=12.01g/mol) Which of the two reactants is the limiting reactant? What is the theoretical yield of SiC(MW=40.10 g/mol) produced?
Diethyl ether has a H°vap of 29.1 kJ/mol and a vapor pressure of 0.703 atm at 25.0°C. What is its vapor pressure at 85.0°C?
Cadmium telluride, , takes the zinc blende structure with a unit cell edge length of . There are four cadmium atoms and four tellurium atoms per unit cell.
A pickle is made by soaking a cucumber in brine, a saltwater solution. What makes the smooth cucumber become wrinkled like a prune
A chemist found that a reaction did not take place under any set of conditions. If the chemist added a catalyst, would the reaction then occur?
dissolved in water to produce 25.0 mL of a solution with pH = 3.28. Determine the ionization constant of the acid.
determine the empirical and molecular formulas of a hydrocarbon which has a molecular weight of 84 mass unit which contains 85.7% carbon.
Plot the radial functions for the 2s and 2p orbitals to explain how shielding plays into the relative energy of 2p electrons to 2s in a multi electron system. What is the relative energy in a hydrogenic (1 electron) system.
We place 1.32 mol PCl5 in a 1.0 L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask
In the chemical formula for alu, there are 12 water molecules present. It is also possible to prepare the anhydrous compound potassium aluminum sulfate. On the "molecular scale" describe how a crystal of alum differs from a crystal of potassium al..
A solution is prepared by dissolving 138.50 g of sucrose, a nonelectrolyte, in 250.0 g of dionized water. The freezing point of the solution was determined experimentally to be -3.0 C.
When 6.82x1015 ng of potassium chlorate is heated, how many grams of potassium chloride and oxygen are formed?
What is the weight percent concentration of sodium carbonate in your unknown if it takes 37.25 mL of 0.1018 M hydrochloric acid to reach the second equivalence point of the titration
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