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If you see that the spectrum of light coming from some object is a nice clean emission line spectrum, what do you then know about the object?
describe how sp3 hybridization occurs in each atom. a) carbon b) nitrogen c) oxygen. If these elements use sp3 hybrid orbitals to form bonds, how many lone pairs of electrons would be found on each?
A 20.94 g sample of an unknown metal is heated to 99.4 C in a hot water bath. The metal is quickly transferred to 100ml of water at 22.0 C in a coffee cup calorimeter.
question calculate the work done if a gas is compressed from 7.8 l to 2.6 l at constant temperature by a constant
using the hendersoon hasselbach equation calculate the pH of a solution made by adding 50.0mL of 1.00M sodium acetate to 50.0mL
flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 10.0 mL of 0.220 M NaOH. 1. what volume of NaOH is needed to reach the end point of the titration?
So we can focus on just one particle and write an unsteady mass balance on that particle, i.e., d(ρV)/dt = - 4πR^2 km (Csurface - 0) , where V is the particle volume and equals 4/3 πR^3 .
Neglecting minor losses, determine the reduction in pump BHP required by heating the oil from 50F to 100F. Assume pump efficiency of 80%. Please show steps and answer in HP.
A sample of an unknown gas effuses in 11.3 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.72 min. What is the molar mass of the unknown gas
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..
The freezing point of a solution of 1.048 g of an unknown nonelectrolyte dissolved in 36.21 g of benzene is 1.39°C. Pure benzene freezes at 5.48°C and its Kf value is 5.12°C/m. What is the molecular weight of the compound?
at the temperature of thirty seven degree celsius the equilibrium concentration of ca2 inside a cell 0.085 m and
While you compute the density of water how would your results be affected if the graduated cylinder contains a few drops of water instead of being clean and dry
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