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What is the molecular weight of a volatile liquid, if .50 g of the liquid fills a 100 mL flask as a gas at 25 degrees C and 1.0 atm pressure?
a) 61
b) 122
c) 230
d) 352
e) 760
The expresssion for the freezing point depression of a solution relative to that of the pure solute is shown above. From solutions of known concentrations of p-dichlorobenzene in cyclohexane, you determine Kf, the freezing point depression constan..
What is the concentration of protein A in the filtrate, as well as the concentrations of proteins B and C in the filtrate and retentate?
What is the minimum uncertainty in the position of an electron, given that we know nothing about its speed except that it is less than the speed of light?
consider the following mixtures. in each case either calculate the pH if the resulting solution is a buffer solution or state why the solution does
Determine the molecular formula of a compound which has a empirical formula of CH3 and a molar mass of 60.0 g/mol.
An empty beaker has a mass of 38.112 g. 10.00 mL of ethyl alcohol are placed in thte beaker and the mass of the beaker with ethanol is found to be 45.268 g
indicate whether each are activating or deactivating, and whether each are ortho para or meta directing substituents.
How many molecules of HCCH react with 143 molecules of oxygen to produce carbon dioxide and water?
When polymerization of a protein is complete but the protein is still completely linear, what is the highest level of structure that has been completed?
Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?
A horizontal piston contains 34kg of water that is saturated at 36oC. Heat is transferred to the water until 80% of the water vaporizes.
Determine the theoretical mole ratio of NaCl to NaHCO3.
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