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A 68-kg person exposed to thorium-234 receives 5.0x10^4 B particles, each with an energy of 3.0x10^-14 J. How many rads does the person receive?
A. 8.8E-11 rads
B. 2.5E-10 rads
C. 2.2E-9 rads
D. 2.2E-6 rads
E. None of these choices is correct
An excited hydrogen atom emits light with a frequency of 1.141 multiplied by 1014 Hz to reach the energy level for which n = 4. In what principal quantum level did the electron begin?
The activation energy for the isomerization ol cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this reaction increase as the temperature rises from 256 to 297 oC.
The resulting solution required 40.70 mL of 0.08765 M AgNO3(aq) to precipitate the Cl^- (aq) and Br^- (aq) as AgCl(s) and AgBr(s).
A gaseous reaction occurs at a constant pressure of 45.0 and releases 61.0 of heat. Before the reaction, the volume of the system was 9.00 . After the reaction, the volume of the system was 3.00 .
Use the letter from the reagent table for inorganic reagents and write the IUPAC substitutive name for the bromoalkane.
Analyzing a new reaction Consider the following elementary steps that make up the mechanism of a certain reaction: 1.3A>B+C 2. B+2D>C+F A. What is the overall reaction?
How reliable is the perfect gas law in comparison with the van der Waals equation? Calculate the difference in pressure of 10.00g of CO2 confined to a volume of 100cm3 at 25 degrees Celsius between treating it as a perfect gas and a van der Waals ..
If 50.0 mL of 0.150 M CaCl2 is added to 50.0 mL of 0.100 M AgNO3, what is the mass in grams of AgCl precipitate?
If 17.9 mL of 0.800 M HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia.
How many mL of a 22.5% (v/v) ethanol solution would you need to measure out in order to have 12.5 mL of ethanol? The Molar Mass of ethanol is 46.07g/mol.
the solubility product constant for MgF2 is 6.4 × 10-9. How many grams of MgF2 will dissolve in 150 mL of H2O at 25°C?
The partial pressures of PCL5, PCl3, and Cl2 are .875 atm, .463 atm, and 1.98 atm. What is the value of equilibrium constant?
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