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1- An injection containing 10.0pg 10 5 B was injected into a patient suffering from a brain tumor. The patient was irradiated by a neutron gun at the site of the tumor. Calculate the amount of energy released in megaelectronvolts given that 931 MeV is released for each 1 amu mass defect. To calculate the energy released, consider the isotopic masses as follows:
Element or particle = Isotopic mass (amu):10 / 5 B = 10.0129neutron= 1.00867 3 Li = 7.0160alpha particle = 4.0026
Express your answer in megaelectronvolts to three significant figures.
2- Calculate the mass defect of the fluorine nucleus 19 /9 F. The mass of neutral 19 / 9 F is equal to 18.998403 atomic mass units. Express your answer in atomic mass units to four significant figures and u units
3- Calculate the binding energy E/ B of the fluorine nucleus 19 / 9 F .Express your answer in millions of electron volts to four significant figures and MeV units.
4-Calculate the binding energy per nucleon of the fluorine nucleus 19/ 9 F .Express your answer in millions of electron volts to four significant figures and MeV / nucleon units.
5- Calculate the mass defect of the helium nucleus 4 /2 He. The mass of neutral 4 /2 He is given by M/ He =4.002603u .Express your answer in atomic mass units to four significant figures and in u units.
Calculate the partial pressure of carbon dioxide after cooling back down to the initial temperature and the mass percent, the mole fraction, and .
Suppose that the solvent ethanol could serve to replace the methanol in this process, but at the expense of double the concentrations of the solvent in the atmosphere.
Compute the difference in the ionization energies for the 1H 2H atoms(The ionization energy is the energy of the transition from the n=1 to the n=infinity energy levels for the hydrogen atom. )?
At the temperature of twenty five degree celsius when 1.00 g of sulfur is burned at constant pressure in an atmosphere of oxygen to give SO 2 , and 9.28 kJ of heat is liberated. Determine the ΔHfo of SO 2 ?
Determine the mass of 28.56 mL of acetone and express your answer in grams? also find out the volume, of 6.54 g of acetone and express your answer , in mL?
determine how do you know if there must be a precipitate or not and Show whether or not a precipitate will form if The Ksp of PbI2 =9.8×10-9
compute the energy levels for the rotation perpendicular to its symmetry axis at J=1. T he bond length in the 14NH 3 =101.2 pm and NHN bond angle 106
How many gms of H2O must be combined to 519.5 gms of methanol at 20°C to have an osmotic pressure of 408 mm of Hg? Methanol density = 0.8921 g/mL.
How much 0.20mol/L sodium hydroxide should be combined to this buffer to raise the pH to 5.1? If the same amount of 0.20 mol/L sodium hydroxide were combined to 250mL of deionized H 2 O, Determine New pH?
I am trying to understand the effects of leachate from landfills and its effects on groundwater, and since I am in environmental health- its effects on the human health.
What might you conclude about the structures of these 3 (X,Y,Z)compounds?
Find the volume of FeSO4 solution - What volume of 0.200M FeSO 4 solution would be required to react with 20.0mL of 0.250M KMnO 4 according to the following equation?
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