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write the structure for all iupac name for alkane with formula c6h14 that aha only primary and secondary carbon atom
Consider the reaction when aqueous solutions of barium acetate and chromium(III) iodide are combined. The net ionic equation for this reaction is
According to the Bohr model, the allowed energies of the hydrogen atom are given by the equation: E = (-21.7 x 10-19)/n2 J. Which of the following energy levels is not possible in the Bohr hydrogen
If the decay of trihalomethane is first order,and 90% of the trihalomethanes in glass of tap water are gone after 3 hours, what is the decay rate constant
If the hindenburg held 200000 m^3 of hydrogen gas at 23 degrees C and 1.0 atm, what mass of hydrogen was present
A 1.25g sample of copper ore was dissolved in acid and diluted to 250.0 mL. A 20.00 mL portion was diluted to 50.00 mL. The copper concentration of this solution was 4.62 ppm. What is the weight per
How many grams of sodium carbonate is formed from the reaction of 74.0g of sodium hydroxide and 44.0g CO2. How many grams of each material is present after the reaction
Assuming that this reaction is complete and that there is 153 mg/l of CaSO4 initially present, what is the mass of soda ash that must be added to 1 liter of the water
Find P given that 25 mL of toluene and 25 mL of an aqueous solution containing 0.000330 moles of an organic compound were shaken together and 31 % was extracted into the organic phase.
Balance each of the following equations and choose the appropriate expression for its equilibrium constant. a. NO(g)--> N2O(g)+NO2(g)
A 20.06g sample of mercury (Hg) reacts with chlorine to produce 23.61g of compound. What is the empirical formula of the compound formed. If the molecular mass is approximately 480 amu, what is the
The cis and trans geometric isomers of a compound can have different chemical and physical properties. Draw the structure of the geometric isomer of 2-pentene that has the lower melting point
If a 0.0157 M solution of a certain analyte exhibits 47.5% T at a wavelength of 280 nm, what will the percent transmittance be for a 0.0279 M solution of the same analyte? Assume the pathlengths for
Aldo Reaction Major and Minor Products from Benzaldehyde and Cyclohexanone. Why is the one you chose the major product
You have a 1.23-mol sample of water at ?30.°C, and you heat it until you have gaseous water at 140.°C. Calculate q for the entire process. Use the following data.
A lactic acid/lactate ion buffer solution contains 0.43M HC3H5O3 and 0.62M C3H5O3^-, respectively. The value of lactic acid is 1.4*10^-4. Calculate the pH of this buffer.
The standard heats of formation at 25 degrees celsius for NO(g) , O3(g) and NO2 (g) are 21.57, 34.1, and 7.93 kcal/mol respectively. What is the value for change direction for
A specific steroid has max = 291 nm and molar absorptivity = 11,500. What is the concentration of the compound in a solution whose absorbance at 291 nm is A = 0.050 with a sample pathlength of 1.00
An ammonia/ammonium buffer solution contains 0.22M NH3 and 0.83M NH4^+. The Kb value of ammonia is 1.8*10^-5. Calculate the of this buffer.
measured in a 1.00-cm pathlength cuvette, has an absorbance of 0.321 while the reagent blank in the same cuvette has an absorbance of 0.014. What would be the absorbance reading of these two solutio
1-Napthaleneacetic acid is not soluble in water at room temperature but goes into solution readily when heated.
What is the chemical formula for the base iron(III) hydroxide. The formula for the oxalate ion is C2O4^2-
Predict the order of elution for benzoic acid and methyl orange in normal phase column chromatography using polar SiO2 as the stationary phase. In other words, which compound should come off the col
A 12 oz can of Coke contains 46 mg of caffeine. One fluid ounce is equivalent to 29.57 mL (1 oz = 29.57 mL). What is the concentration of caffeine in Coke, in units of mg/mL
You have discovered a new element with an atomic weight of 260 g/mol and a density of 30 g/cm3. If the atoms pack on a BCC lattice what is the hard sphere atomic radius R (in nm)