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(a) What are valence electrons?
(b) How many valence electrons does a nitrogen atom possess?
(c) An atom has the electron configuration 1s22s22p63s23p2. How many valence electrons does the atom have?
consider 25.0 g of water at 21.7degc that are mixed with 25.0 g of water at 43.3degc in a foam cup calorimeter. the
Calculate the rate constant of the catalyzed and uncatalyzed reactions. How many folds of rate enhancement are produced by the enzyme? The rate constant is 13.46 but what is the nuber of folds of enhancement that are produced by the enzyme?
Is this system at equilibrium? If not, will the amount of N(g) increase or decrease as the system proceeds to equilibrium at 4000 k in a fixed volume
The compounds whose IR spectra appear below are all substituted alkenes. Use the spectra to determine the substitution pattern.
Depict and arrow-pushing mechanism for an elimination reaction using NaOH as base to convert 5-nitrobenzisoxazole to 2-hydroxy-5-nitrobenzonitrile. Give the structure of the intermediate
what is the difference between the solvents used to run TLC's of polar and non-polar lipids?
If 20.0 mL of 0.12 M cobalt(II) nitrate is reacted with 15.13 mL of 0.097 M sodium phosphate, which of the two reactants will be left over and which will be completely consumed?
What is the concentration of the dilute aspirin? a. What is the concentration of the aspirin in the dilute aspirin solution? b. What is the concentration of the original solution ? C. How many mg of aspirin are present in one tablet of Brand Y asp..
When agueous solutios of AgNO3 and NaI are mixed,AgI precipitates. What is the balanced net ionic equation
Question- If 2.00 mL of .800 M NaOH are added to 1.000 L of 0.800 M CaCl2, what is the value of the reaction quotient and will precipitation occur
hydrogen peroxide usually comes commercially as a 30 wv aqueous solution with a density of 1.106 gml. calculate the
Calculate the absorbance A at each wavelength, calculate the molar absorptivity at each wavelength and what would T be if the cell length were in each case 2.00 cm - What were the concentrations of MEK in the solutions A-D?
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