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Explain if a solution of compound S (MW = 200) w a known ε of 20,000 at λmax of 300 nm gave an absorbance of 1 in 1cm cell, explain how many mg of compound S was present in 1 mL of the analyzed solution?
what is the total molar concentration of ions in
A one-mole sample of a monatomic perfect gas with a constant pressure heat capacity of 20.85 J/(K mol) is initially at a pressure of 3.25 bar at 200 K. It undergoes an adiabatic reversible expansion until its pressure is 1.52 bar. Calculate: q, w,..
On average, cow milk is 4.7%(w/w) lactose. The molecular weight of this disaccharide is 342.3g C12H22011. Assuming milk has the density of water.
If 4.25g of H2 over water at 25 degrees Celsius was collected that had a total pressure of 1.15 atm, explain what would be the partial pressure of the H2 collected? State the pressure of gaseous water at 25 degrees C is 23.8torr.
calculate the standard enthalpy change for this reaction using standard enthalpies of formation. general chemistry 10th edition ebbing and gammon
What the Van der Waals Pressure of ethane gas at temperature of 500K and Molar Volume of 7.28 x 10^-5 m^3/mol?
Sketch the typical stress-strain curve for a metal and a ceramic. Using the sketch, indicate the following properties; elastic and plastic regions, yield points, Ultimate Tensile Strength (UTS), strain energy and fracture toughness.
what quantity of heat is required to heat 168 g of copper from -12.2 to + 25.6 degrees C?
In the equation below, fill in the blanks with the appropriate whole numbers to provide a balanced equation: ___ EtCH=CHEt + ___ KMnO4 --> ___ EtCO2K + ___ MnO2 + ___ H2O + ___ KOH
using any diagrams that you wish to draw, explain how the Ocean Optics spectrophotometer works. Note: we are not asking how to operate the spectrophotometer.
Determine All the products of acid-catalyzed dehydration of 2-pentanol. Show the mechanism for one of the products.
A solution of methanol, CH3OH, cotains 55.0 grams of methanol in 100. mL of water solution. What is the molarity of methanol in the solution?
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