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A sample of an unknown gas effuses in 11.3 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.72 min. What is the molar mass of the unknown gas ........g/mol
The top stream contains diesel and heating oil. The middle stream contains heating oil and lubricating oil, and the bottom stream contains the solids
Does adding boiled, deionized water to the titrating flask to wash the wall of the erlenmeyer flask and the buret tip increase, decrease, or have no effect on the Ksp
Alkynes can be hydrated in the presence of acid and HgSO4, by electrophilic addition of a molecule of water to the triple bond. The reaction proceeds by way of a carbocation intermediate
what would the concentration of copper be in a solution created by combining 10ml of it with 10 ml of the 0.100M copper (II)sulfate solution?
magnesium hydroxide is 54.87% oxygen by mass. How many grams of oxygen are in 175g of the compound ?
The Gibbs free energy of formation of solid iron (III) oxide is the Gibbs free energy change for the reaction
Compute the mass of air in an air-filled tire and the also determine the mass of He in a helium-filled tire
Scale up the reaction from a 10 mL sample of WVO, 2 mL of methanol and 0.1 g DRANO. Calculate the cost of the reactants to convert one gallon of WVO into one gallon of biofuel.
How many MOLES of phosphorus triiodide are present in 7.73E+22 molecules of this compound
A certain substance has a molar heat of vaporization of 31.6 kj/mol. How much of the sunstance is in a sample that requires 57 kj to vaporize.
One of the key steps in brewing beer (or brewing root beer, if you prefer) is conversion of starch stored the barley into di- and trisaccharides through a process called "mashing" of the grain
Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown substances they find in the course of their duties
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