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Polyethylene is a synthetic polymer or plastic with many uses. 1.40 g of a polyethylene sample was dissolved in enough benzene to make 100. mL of solution, and the osmotic pressure was found to be 1.86 torr at 25°C. What is the molar mass of the polyethylene? R= 62.4 L-torr per mol Kelvin
Some wastewater has a BOD5 of 150 mg/L. The reaction rate is 0.23/d. What is the ultimate carbonaceous BOD
Using the Boltzmann distribution given below, determine Jmax (quantum number of the most intensely populated rotational state) as a function of temperature. Then find Jmax for CN+ at 298 K and 1100 K.
Assume that aspartame is a molecular solid and does not ionize when it dissolves in water. Kf values are given here.
A balloon is filled to a volume of 5.0 102 mL at a temperature of 29.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 102 K. What is the final volume of the balloon?
a question about an organic chemistry lab report. I am synthesizing aspirin (acetylsalicylic acid) using salicylic acid, acetic anhydride, and a catalyst.
a skyscraper in pittsburgh built in the early 1970s is supported by water filled columns. potassium carbonate was added
What mass of oxygen is needed to burn the butane in the lighter completely. How many moles of CO2 form when all of the butane is the lighter burns. How many molecules of gas form when the butane in the lighter burns completely.
How many kilograms of CaH2 are needed to fill a 147 L tank with compressed H2 gas at 160 atm pressure and 27 degrees C?
when discussing water treatment we learned that high phosphate concentrations are often observed and it is a problem
Determine how many grams of Phosphorus tri-fluoride will be produced when 40.1 g of F2 mix, and the reaction has a 78.1% yield?
FeCl3 and Mg3(PO4) to give FeSO4 and MgCl2 I need to know what are the : Molecular Equation? Ionic Eq? Net Ionic Eq? What is the name of this type of reaction. Which ions are spectator ions
Calculate the molarity for: A.0.5g CO2 in 652 g of water. B. 56g of NH3 in 500 g of water. C. 3.21 g of NaOH in 3405 ml of water.
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