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A particular smoke detector contains 2.85uCi of 241Am , with a half-life of 458 years . The isotope is encased in a thin aluminum container. Calculate the mass of 241Am in grams in the detector. detector. Express your answer numerically in grams.
What is the freezing point of an aqueous 2.65 m calcium chloride (CaCl2) solution? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.
The minimum energy needed to eject an electron from a sodium atom is 4.41 X 10^-19. What is the maximum wavelength of light, in nanometers, that will show a photoelectric effect with sodium?
suggest another small molecule that like water and ammonia might make a good ligand. remember that ligands are electron pair donors which means that one atom must have a lone pair of electrons on it. draw lewis dot structure of the molecule you th..
Draw the Newman projection for the most stable conformation of (2R,3S)-2,3-dichloropentane. Please explain how to do this question, thanks in advance.
Consider a solution formed by mixing 61.0 mL of 0.100 M H2SO4, 26.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 25.0 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH.
Determine the pH at the equivalence (stoichiometric) point in the titration of 30.9 mL of 0.804 M HCOOH by 0.369 M LiOH. The Ka of HCOOH is 1.8 x 10-4.
Draw a mechanism for each reaction which explains the results. All electron movement must be indicated by arrows.
Draw the lowest energy conformation of 3-ethyl-2,4,4-trimethylheptane, depicting the C3-C4 bond on a sawhorse.
determine the footing width for a one-story 800 square feet conventional wood-frame house with a 2:1 length-to-width ratio to be constructed on a site in a warm climate with the following soil
A scuba divers tank contains 0.29kg of O2 compressed into a volume of 2.3L. Calculate the gas pressure inside the tank at 9 degrees C
an a group metal m reacts with chlorine and oxygen to form ionic compounds with the formulas mcl4 and mo2. propose a
Write the net ionic equations for & the reactions occurring for each cation in the group.
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