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Aluminum and oxygen react to form aluminum oxide by the equation
___Al(s) + ___O2(g) ® ___Al2O3(s)
In a certain experiment, 137 g of Al2O3 are produced from 75.6 g of Al and 124 g of O2.
a. What is the theoretical yield of Al2O3?
b. What is the percent yield of Al2O3?
If 2.44 moles of Helium gas has a pressure of 2.4 atm at 343 K, what volume must the gas occupy.
Calculate the mass of urea that should be dissolved in 201 g of water at 35°C to produce a solution with a vapor pressure of 37.1 mmHg.
The limiting current of lead in an unknown solutions is 5.60μA. one mL of a 1.00 x 10-3M lead solution is added to 10.0mL of the unknown solution
If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
The weathering of pyrite (FeS2) in coal mines and in metal sulfide ore deposits can be represented by the following reaction
Suppose that a student collects the following spectrophotometric data to determine the relative concentrations of HMR and MR in solution:
Calcium crystallizes with a body-centered cubic structure a) how many Ca atoms are contained in each unit cell? b)how many nearest neighbors does each Ca atom posses
solid sodium reacts violently with water producing heat hydrogen gas and sodium hydroxide. how many molecules of
Define nucelophilicity. Give a detailed explanation as to why hydroxide is a much better nucleophile than water.
A 1.649-g sample of a solid, weak, monoprotic acid is used to make 100.0 mL of solution. 55.0 mL of this solution was titrated with 0.09012-M NaOH. The pH after the addition of 26.06 mL of base was 7.54, and the equivalence point was reached with ..
One reaction gives the ether in good yield, and the other undergoes an elimination reaction. Which reaction gives the ether? What is the product of the elimination reaction?
Predict the coordination number in a NiS crystal. The ionic radii for Ni+2 and S-2 are 0.069 and 0.184nm, respectively.
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