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Plutonium (238Pu) was carried in the Voyager space probes to Jupiter as a power source. 238Pu has also been used as a heat source to power heart pacemaker batteries. In a pacemaker this power system is able to have a life up to 20 years. Compute the activity in units of curies (Ci) for the 0.25 g of pure 238Pu used in the pacemaker battery.
A sample of argon gas occupies a certain volume at 14 degrees C. At what temperature would the volume of the gas be three times as big? Assume the pressure stays constant.
Explain the order of elution you observed while performing the gas chromatography for this experiment. What property of the product molecules seems most important in determining relative retention times?
Expalin how you would prepare 500.0mL of a solution that is 0.100 M of H2SO4 from concentrated 18.0 M of H2SO4, which is a liquid with density 1.82g/mL
hydrogen gas has a henrys constant of 7.8 x 10-4 molkg . bar 25 degrees celcius when dissolving in water. if the
Assuming the various solutions are used without dilution with water,how would you prepare 50ml of a buffered medium to keep pH essentially constant at 5.40 in an enzyme experimement in which acid will be produced?
In his explanation of the photoelectric effect, Einstein stated that the incident radiation had to have a minimum energy to dislodge the electron from the metal surface. This energy is called the work function.
Suppose that 0.35 mol of hydrogen gas and 0.35 mol of clorine gas are placed in a 1L reaction vessel at a certain temperature, and the following reaction comes to equilibrium
Why is H2C=CHC6H5 more reactive to cationic polymerization than H2C=CHCH3? but then when we compare those same two alkenes to anionic polymerization the phenyl is still more reactive?
hydrogen gas is produced when zinc reacts with sulfuric acid.zns h2so4aq rarr znso4aq h2gif 147 ml of wet h2 is
What is the density of a substance if a 2.50mL sample has a mass of 0.880g at room temperature? ( show calculations) What is the specific gravity of the substance?
Differ from the ideal pressure? The value For N 2 gas is given as , a = 1.390 L2atm/mol2 and b = 3.910E-2 L/mol.
In a 50.0 L container, 4.00 moles of chlorine and 2.00 moles of bromine are placed and kept at 293.0 K until equilibrium is reached. At equilibrium there are 82.63 g of Br2
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