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Explain what is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr2O3 with 8.00 g of aluminum according to the chemical equation?
2Al+Cr2O3=Al2O3+2Cr
At 30°C, by how much is a reaction's activation energy decreased by the addition of a catalyst if the catalyst triples the reaction rate?
Inspection of an IR spectrum rarely reveals the identity of the compound. However, one can often identify what?
On a unusually warm day in February, Monica ( a burger flipper by default) is sweating profusely over a hot grill. The temperature in the fast food kitchen is 108degF or 42.2deg C and the relative humidity is 88%. During her one morning break, she..
if a 10.0 g sample of zns is treated with excess hcl what volume of hydrogen gas is evolved at stp?zn s 2 hcl aq -gt
The dependance of the equilibrium constant of a reaction on temperature is given by the van't Hoff equation: lnK = -change of H/(RT) + C where C is a constant
How many moles of HNO3 are present in 35.0 mL of a 4.50 M solution of nitric acid?
Which of the following pairs has about the same atomic radius?
Based on the given chemical equation, how many grams of aluminum are needed to react with 0.6 moles of hydrochloric acid? Al + HCl yields AlCl3 + H2
The new electronic configuration of neon -the atomic number of the element with a completed shell -the number of unpaired electrons in fluorine
What is the pH of a solution resulting from the dissolution of 2.09 g of NH4Br in water to form 0.371 L of solution
The log P value for nicotine is 1.09. If 20 mL of 0.10 g/mL nicotine solution in water is extracted with 20 mL of octanol, how much nicotine is removed from the water layer into the octanol layer?
What is the concentration of 50 mL of a solution of NaOH if 25 mL of HCl 0.1M are needed to reach the equivalence point during a titration
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