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Calculate the heat, q and determine whether heat is absorbed or released when a system does work on the surroundings equal to 66.0 J and deltaU=-224.0J
For each of the following species, draw its Lewis-dot structure. If the species exhibits resonance, draw all the resonance hybrids. For each species, tell its shape, bond angles, hybridization of the central atom, and whether it is polar or nonpola..
1.using a sample of 21.2 ml of a weak monoprotic acid hx requires 50.0 ml of 0.045 m sodium hydroxide to reach to the
Using the values for the heat of fusion, specific heat of water, and or heat vaporization, calculate the amount of heat energy in each of the following
Fischer projections, isomers, enantiomers and stereocenters, For 2,3-butanediol, there are 3 isomers; 2 are enantiomers, one is not.
When CO2 is bubbled through an ether solution of benzylmagnesium bromide, and the resulting mixture is acidified, phenylacetic acid is produced.
Radioactive radon gas (222Rn) enters an average building at a rate of 5 picocuries per second per square meter of foundation area. Consider a house with a foundation of 400 square meters and a volume of 1000 cubic meters.
Calculate the mass of nitrogen dissolved at room temperature in an 76.0L home aquarium. Assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78
Explain how to determine exclusion limit of a gel of unknown origin.
how many grams of solute are in the solution 498 mL of a.850 M Na2So4?
What are the signs of Hvap and Svap for water. Do you expect the signs of these quantities to be the same for other liquids. Explain.
An unknown compound has a forula of CxHyOz. You burn 0.1523 g of the compound and isolate 0.3718 g of CO2, and 0.1522 g of H2O. What is the empirical formula of the compound?
What is the coordination environment of F in a hypothetical relative of CaF2, in which Ca forms a hcp array and F occupies all the tetrahedral sites?
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