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A tiny speck (8.3 x 10-7 mol) of americium-241 is utilized in smoke detectors; explain how many atoms of americium-241 are there in one of these smoke detectors?
When determining the effective nuclear charge for a 1s electron, Slater's rules dictate that the other 1s electron must have a value of 0.30 not 0.35. Why?
Hydration of alkynes (via oxymercuration) gives good yields of single compounds only with symmetrical or terminal alkynes. Draw the major organic product(s) formed when hex-2-yne undergoes hydration in the presence of HgSO4 and H2SO4.
dinitrogen pentaoxide has 8.24 x10^20 molcules, how many gram of dinitrogen pentaoxide prsent
consider the reversible reaction ag lt---gt 2bgat equilibrium the concentration of a is 0.381 m and that of b is 0.154
For the following reaction, 4.91 grams of sodium are mixed with excess water. The reaction yields 5.83 grams of sodium hydroxide.
At some temperature, a chemist found the following equilibrium concentrations. [Fe3+] = 6.63 10-3 M, [SCN-] = 7.36 10-3 M, [FeSCN2+] = 4.34 10-2 M
A sample of nitrogen gas occupies a volume of 3.87 liters at 52.8 oC and 2.11 atm. What will the new temperature (in °C) when the volume increases to 4.55 liters and the pressure remains constant?
what amount of methane gas is present in a sample that has a volume of 500mL at 35.o degrees celcius
2 mol of an idea gas 1.4 expands slowly and adiabatically from a pressure of 4 atm and a volume of 10 l to a final
What are the molality and mole fraction of solute in a 29.3 percent by mass aqueous solution of formic acid (CH3OH)?
compounds like rm ccl2f2 are known as chlorofluorocarbons or rm cfcs. these compounds were once widely used as
a gas sample has an original volume of 700 ml when collected at 750 mm and 25degc. what will be the volume of the gas
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