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Some hypothetical metal has the simple cubic crystal structure (i.e., atoms positioned at each of the eight corners with atoms touching one another along cube edges). Calculate its atomic weight if its atomic radius and density are 0.153 nm and 8.72 g/cm3, respectively.
Determine the Biot number in order to support the lumped formulation. Solve the differential equation to find an expression for temperature as a function of time.
Find the concentration of benzene in water (miligram/Liter) if the water is in equilibrium with a layer of oil containing 1%(mol) benzene. the solubility of benzene in water is 1.8 gram/Liter, the molecular weight of benzene is 78.11g/mol
What is the level of productivity in this economy
Acetylsalicylic acid (aspirin), HC9H7O4, is the most widely used pain reliever and fever reducer in the world. Find the pH of 0.045 M aqueous aspirin at body temperature (Ka at 37°C = 3.6 10-4)
Calculate the vapor pressure of water above a solution prepared by dissolving 35.0 of glycerin () in 135 of water at 343 . (The vapor pressure of water at 343 is 233.7.)
What are the hypothesized direct relationships implied by the SEM model and identify the exogenous and endogenous variables.
Monothiocarbamate complexes of Fe(III) have been prepared. For the methly and ethyl complexes, the magnetic moment, μ, is 5.7 to 5.8 μB at 300K, changes to 4.70 to 5 μB at 150K, and drops still further to 3.6 to 4 μB at 78K.
A stone is dropped from rest into a well. The sound of the splash is heard exactly 2.00 s later. Find the depth of the well if the air temperature is 14.0°C. meter
A bottle of wine contains 12.5% ethanol by volume. The density of ethanol is 0.789 g/cm3. Calculate concentration of ethanol in wine in terms of mass percent and molality.
Draw the payoff trees of each assets
The Al2O3 does not react. If the sample residue weighs 2.456 g, what is the mass fraction of Fe2O3 in the original sample?
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation).
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? , draw possibl..
Use the atomic radius (70 pm) and density of neon at 25 °C and 1 atm (0.90 g/mL) to calculate the average density of a neon atom.
Acetylene gas (C2H2) is produced as a result of the reaction CaC2(s)+2H2O(l)-> C2H2(g)+Ca(HO)2(aq) if 13g of CaC2 are consumed in this reaction, how much H2O is needed?
Propose a synthesis of trans-4-octene starting from 1-pentyne. Specify the reagents you would use to carry it out. If two or more routes to the same product are possible, show only one of them.
In making the 3,5-dinitrobenzoate ester derivative, what compounds could be present besides the ester? Indicate any step in the procedure that is intended to remove a possible impurity.
What are the advantages of Attenuated Total Reflectance (ATR) sampling in IR over Beam Through Sample sampling
The solubility of the ionic compound M2X3, having a molar mass of 214 g/mol, is 3.18 10-7 g/L. Calculate the Ksp of the compound.
when cyclopentane is exposed to br2 in the presence of light reaction occurs. write the formulas of all possible
The redox reaction of peroxydisulfate with iodide has been used for many years as part of the iodine clock reaction which introduces students to kinetics. If Eºcell = 1.587 V and Eº of the anode half-cell is 0.536 V, what is Eº of the cathode half..
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
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