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Assignment
1. If 5.26 L of nitrogen monoxide and 7.64 L of oxygen are combined. What mass of nitrogen dioxide will formed? 2NO + O2 → 2NO2
2. 46.1 g of cesium and 13.4 g oxygen reacted-to form 28.3 g of cesium oxide. Which reactant was the limiting reactant? What was the percent yield of this reaction? 4 Cs + O2 → 2 Cs2O
3. 28.1 g of tetraantimony hexoxide reacted with enough carbon to form 17.3 g of antimony. What was the percent yield of this reaction? Sb4O6 + 6C → 4 Sb + 6 CO
4. At STP condition, 10 L nitrogen gas and 15 L hydrogen gas reacted to form 8.5 L ammonia gas. Which reactant was the limiting reactant? And what was the percent yield of this reaction? _ N2 + _H2 → _ NH3
There are four possible p orbital arrangements for the butadiene molecule. Which of the following statements about these orbitals is not correct? A) The four arrangements differ by the number of anti-bonding interfaces in each arrangement.
A 4.50-g sample of LiCl at 25.0C dissovles in 25.0mL of water also at 25.0C. Th final equilibrium temerpature of the resulting solution is 60.8C
Zinc metal is added to hydrochloric acid to generate hydrogen gas as well as is collected over a liquid whose vapor pressure is the same as pure water at 20.0 C (18 torr). The volume of the mixture is 1.7 L and its total pressure is 0.810atm. Find..
What are the concentrations of each of the ions in a saturated solution of PbBr2, given the Ksp of PbBr2 is 2.1 x 10^-6?
Drive the following relationship between the Kelvin and Fahrenheit temperature scales: T (in K) = 255.37 + (5/9 t (in Fahrenheit))
At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2 is 0.0620 g/L what is the Ksp of this salt at this temperature
Calculate the concentration of argon in lake water at 20C. if the partial pressure of argon is 0.0090 atm and Henry's constant is 0.0015
The freezing point of an aqueous solution containing 15 g of a nonelectrolyte in 150 mL water is -5.4°C. What is the molecular weight of the compound? Kf = 1.86°C/m for water.
a bottle containing 300 g of cleaning solution is used for carpets. if the cleaning solution has a specific gravity of
Explain why carbon tetra-chloride does not dissolve in water?
the equilibrium constant kc for the reaction has the valueof 4.00 at 500k. if a mixture of 1.00 mol co and 1.00 mol
Explain why the Rf values changed when the eluant was changed from 100% petroleum ether to a 95:5 mixture of petroleum ether-ethyl acetate.
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