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A gas whose molar mass you wish to know effuses through an opening at a rate half as fast as that of helium gas. What is the molar mass of the unknown gas?
Predict the organic product of the following reaction. Include hydrogen atoms in your structure.
Two bottles of colorless liquids have been in the back of the storeroom. Because of the age of the bottles the labels have fallen off. However it's known that one is formic acid as well as the other is 1-propanol.
Question- As the biochemistry lab supervisor, you need to prepare 2.5 L of 35 mM buffer at pH = 4.00 for an upcoming lab experiment. If you have available to you malic acid and sodium malate, then calculate the mass (g) of malic acid and sodium ma..
Explain a rigid 8.20 L flask contains a mixture of 2.50 moles of H2, 0.500moles of O2 and sufficient Ar thus that the partial mixture of Ar in the flask is 2.00 atm. The temperature is 127 degrees Celcius.
Compute the change in internal energy of the following system a balloon is cooled by removing 0.652 kJ of heat. It shrinks on cooling as well as the atmosphere does 385 J of work on the balloon.
How would not allowing the crucible to cool to room temperture before weighing the product affect the outcome of the experiment. How would touching the crucible with your fingers before weighing the final product affect the outcome of the experiment
25.0 ml of ethanol initially at 7.0 degrees c is mixed with 35.0 ml of water initially at 25.3 degrees c in an
A student is given a soluble sodium salt containing one of eight possible anions (negative ions): acetate, chloride, bromide, iodide, sulfide, sulfate, and phosphate. The student adds some BaCl2 solution to the salt solution. A precipitate forms. ..
Describe procedures for preparing each of the following compounds, using ethanol as the source for all of their carbon atoms (you can use any reagent you like, but every carbon in every product below must have originated in ethanol; once you prepa..
Consider the pH range for the following indicators and select the most appropriate indicator for the titration of an HCN solution with a NaOH titrant.
By how much does the chemical potential for copper change when the pressure exerted on a sample is increased from 100 kPa to 10 MPa
Find the volume (mL) and pH of 0.0588 M KOH needed to reach the equivalence point(s) in titrations of the following.
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