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Why is the freezing point of water set at 32ºF? Why does the Fahrenheit scale start at 0º?
A cylinder contains 30.5 L of oxygen gas at a pressure of 1.6 atm and a temperature of 300 K
How much heat energy, in kilojoules, is required to convert 68.0 grams of ice at -18.0 degrees C to water at 25.0 degrees C
After adding the two portions into the calorimeter setup and following the procedure outlined in the experiment, you determine the temperature of the mixed portions of water to be 45*C. what is the heat capacity of the calorimeter?
The value of E for the following reaction is 0.34 V. What will the cell potential be when the [Cu2+] =10 M and the [Cr3+]=1 M? 2Cr(s) + 3 Cd 2+ (aq) --> 2Cr3+ (aq) + 3Cd(s) a)0.31 b) 0.46 c) 0.4 d) 037 e)0.28
How long does it take (in minutes) for light to reach Mars from the Sun, a distance of 2.402 × 108 km
Give the structures of two different aromatic compounds that could be used to synthesize benzene-1,2-dicarboxyclic acid
How many theoretical plates does the column have? What is the plate height (in mm) of the column if the column is 11.7 cm long?
Unlike chemical reactions, for which mass is conserved, nuclear reactions result in slight changes in mass. When mass is lost, it becomes energy according to the equation where is the energy in joules, is the mass defect in kilograms
a solution of 8.32g of paba in 150g of chloroform boiled at 62.62C. what is the molecular mass of paba?
Would there be any moisture diffusion in this system? In which direction? Using your sorption isotherm estimate the final moisture contents and water activities of each component?
Assume the temperature of the mixture is chosen so that Kp=0.12. Predict the effect on the partial pressure of SO3 as equilibrium is achieved by using Q, the reaction quotient.
Acetylene (C2H2) can be produced from the reaction of calcium carbide (CaC2) with water. Draw the localized electron orbital model (hybridized orbital model) for the acetylide anion (C22-), showing ?, ?, and lone pair electron orbital.
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