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Write, using correct notation, the balanced nuclear reaction equation for each of the following:
a. Electron capture by 93/43 Tc
b. Alpha emission from 214/85 At
c. Decay of 74/31 Ga to form 74/32 Ge
d. Positron emission from 198/79 Au
When determining the pressure of dry hydrogen gas, explain how the measured atmospheric pressure is corrected for the presence
It is also noted that NO3 is a reaction intermediate. Suggest a plausible reaction mechanism
How much HCl must be added to a liter of buffer that is 1.5 M in acetic acid and 0.75 M in sodium acetate
Explain how FeBr3 assists the reaction. Br2 dissolves in a number of solvents, but we preferentially use glacial acetic acid.
A 280- mL flask contains pure helium at a pressure of 757 torr. A second flask with a volume of 465 mL contains pure argon at a pressure of 715 torr.
A voltaic cell is constructed that uses the following reaction and operates at 298 K. (Ered Ni+2 is -0.277) Zn(s) + Ni2+(aq) Zn2+(aq) + Ni(s) (a) What is the emf of this cell under standard conditions?
Calculate the volume of 0.500M hydrochloric solution that must be added to 20.5g of sodium ethanoate to make 500cm3 a buffer of pH4.50.The pKa value of ethanoate acid is 4.76.
What is the molarity of a HCl solution that contains 6.13 g of HCl in 352 mL of solution?
If the metal crystallizes in a body-centered cubic structure, which choice is closest to the atomic mass?
If you take a 67.5 mL portion of 1.98 M. NH3 stock solution and dilute it to a total volume of 0.600 L, what will the concentration of the final solution be?
compute the water volume that is released upon its total metabolism to carbon dioxide and H 2 O, taking into account any oxidative phosphorylation that might occur.
2.00 L of H2 at a pressure of 368 torr and 1.00 L of N2 at an unknown pressure. If the total pressure in the flasks is 336 torr after the stopcock is opened.
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