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Clausthalite is a mineral composed of lead selenide (PbSe). The mineral adopts a NaCl-type structure. The density of PbSe at i25 °C.is 8.27 g/cm3 Calculate the length of an edge of the PbSe unit cell.
A gas occupies a volume of 925mL at 30 degrees celcius and 1.2atm. What volume will it occupy at STP?
calculate the equilibrium constant for the reaction CO2 + H2O ? HCO3 - + H+ (Hint: Start by writing an equation that defines the equilibrium condition in terms of the Michaelis-Menten formulation of this reaction. Note that the kinetics was measur..
which change to this reaction system would cause the equilibrium to shift to the right?n2 g 3 h2 g 2 nh3 g ?h lt 01
Sunflower oil contains 0.070 mol palmitic acid (C16H32O2)/mol, 0.060 mol stearic acid (C18H36O2)/mol, 0.29 mol oleic acid (C18H34O2)/mol, and 0.58 mol linoleic acid (C18H32O2)/mol. To create margarine from sunflower oil, the liquid oleic and linol..
Three gases were added to the same 8.5 L container. The total pressure of the gases was 791 torr at room temperature (25.0°C). If the mixture contained 0.71 g of oxygen gas, 0.85 g of carbon dioxide, and an unknown amount of nitrogen gas, determin..
The crucible is not fired, as the procedure suggests, but had retained some impurities from previous use. The mass of the "dirty" crucible is recorded.
At room temperature (20^circ rm C), milk turns sour in about 63 hours. In a refrigerator at 3^circ rm C, milk can be stored three times as long before it sours. Estimate the activation energy of the reaction that causes the milk to sour.
What is the equilibrium constant Kc for the reaction below. Assume temperature is 25oC. ( Represent the reaction below as a sum of reactions and then combine the corresponding K values to obtain Kc for the reaction below.)
in a controlled greenhouse at 30.0c and 1.0 atm a crop of seeding tomato plants was found to consume 380 l of carbon
write equations that show a plausible reaction mechanism for the light-catalyzed isomerization of methyl maleate
If 495g NaOH is dissolved in a final volume of 20.0 L, what is the molarity of the solution.
If units were explicitly specified for Kp of the reaction above, they would be [atm]n. What would be the value of n for this reaction?
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