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During steel formation, why do the following reactions cause the temperature in the converter to increase?2C (s) + O2 (g) --> 2CO (g) and Si (s) + O2 (g) --> SiO2 (l)
Solid calcium oxide mixes with carbon dioxide gas. Diphosphorus pentoxide is added to water. Hydrogen sulfide gas is bubbled through a solution of silver nitrate.
A student determined the freezing point of pure t-butyl alcohol following the procedure given in this experiment . Because of an experimental error, the freezing point temperature that she obtained was higher than the correct value
Determine the concentration in molarity (M) of a crystal violet solution based on a measured absorbance of 0.652 at 590 nm at a path length of 1.0 cm
The value of deltaH for the reaction below is -72kj .how much of heat is released when 3.0 mol of HBr is formed in this reaction . is the reaction exothermic or endothermic
4HCl MnO2=MnCl2 2H2O Cl2. When .375 moles of HCl reacts with excess MnO2, a.) How many moles of Cl2 form? b.)How many grams of Cl2 form?
Calculate the energy levels of the pi-network in octatetaene, C8H10, using the particle in the box model. To calculate the box length, assume that the molecule is linear and use the values 135 and 154pm for C--C and C-C bonds.
Professor Tipton, being an avid hunter, was stalking the woods for morels. He saw a giant morel next to a fallen tree. When he reached down to get it a small timber rattler bit his hand
Assume a gasoline is isooctane, which has a density of 0.692 g/mL. What is the mass of 2.5 gal of the gasoline (1 gal = 3.78 L)? Answer in units of kg.
Aqueous silver nitrate was then added to precipitate the Cl- and Br- ions as AgCl and AgBr. The mass of silver halides obtained was 0.9974 g. What are the molarities of HCl and HBr in the original solution
Rb has two naturally occurring isotopes 85Rb and 87Rb, with masses 84.9118 amu and 86.9092 amu, respectively. The average atomic mass is 85.468 amu.
operating a heat exchanger with pentane and propane. 100 mol/h pentane enters at 300 C and leaves at 400 C. 100 mol/h propane enters at 600 C. What is the exit temperature?
You have a box of volume 1.00 liter into which you inject 2.65g of NH3 at 600K. What will be the final concentrations of NH3, N2, and H2 after equilibrium is established
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