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The molarity of a reactant in a second-order reaction falls from 0.150M to 0.130M in 30.0s What is the instantaneous rate of disappearance of the reactant at 30.0s?
a turbine operates by the impact of a high velocity jet of steam against the turbine blades. The steam leaves the turbine at a lower velocity. For the turbine depicted, steam from a high pressure nozzle enters the air and strikes the blades of a t..
A compound contains only nitrogen and hydrogen and is 87.4% nitrogen by mass. A gaseous sample of the compound has a density of 0.925 g/L at 690 torr and 110 C.
M+ is added to a solution of 0.0035 M X- and 0.0016 M Z-. MX has Ksp = 8.2 × 10^-9, while MZ has Ksp = 1.7 × 10^-10. What percentage of the Z- is still in solution (not precipitated) when the MX just starts to precipitate? Answer in units of %.
What volume of Cl2 gas, measured at 682 torr and 40 degrees celcius, is required to form 26 g of NaCl ?
A sample of an unknown gas effuses in 12.4 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.59 min.
The J=0 to J=1 transition for carbon monoxide (12C16O) occurs at 1.153 X 10^5 MHz. Calculate the bond length of carbon monoxide.
A 50.0 L cylinder of Ar has a pressure of 137 atm at 25 C. What mass of Ar is inside the cylinder?
Which of these statements correctly describes a diamond?
How many moles of methane occupy a volume of 2.00 l at 50.0*C and0.500 atm? (R=0.0821 atm*L/molxK)
Show how many µL of protein sample you will take and add with the desired volume of DTT and Laemmli buffer to make the right concentration of sample.
If 115 of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
In extracting an organic compound from an aqueous solutin, what is the practical advantage to having the organic solvent be more dense
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