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Part of this unit concentrated on gaseous molecules, but stated that liquids and solids can also consist of molecules. Ethanol and aqueous film-forming foam are examples of liquid molecules. Discuss how the thickness (viscosity) of ethanol or aqueous film forming foams can be changed. Does the foam have a higher or lower molecular weight? Why, or why not?
calculate the average bond enthalpy for the carbon-carbon bonds in C6H6, comment on your answer in comparison to the estimated values for a single C-C bond (348 kJ/mol) and a double C=C bond (1842 kJ/mol)
Compute the theoretical yield (by mass) of Ca3(PO4)2. Compute the percentage yield (by mass) for the reaction if 64.3 g of Ca3(PO4)2 is actually obtained.
In group 16 since, the electronegativity decreases so tendency to exhibit -2 oxidation state decreases as we go down the group. why this is so? How electronegativity and oxidation state link with each other.
determine what percentage (by mass) of the detergent must be sodium carbonate in order to completely precipitate all of the calcium and magnesium ions in an average load of laundry water.
You prepared a 0.250 M solution by diluting 8.45(+-0.04)mL of 28.0(+-0.5)mL wt.%NH3 (density=0.899(+-0.003)g/mL up to 500.0(+-0.2)mL. Find the uncertainty in 0.250 M.
Draw a possible Lewis structure for a IF7 molecule. List two possible names for this shape. What hybridized orbitals are used by the central iodine atom in this molecule
A. 100 ml sample 0.77 HCl titrated with 0.12 M LiOH. What is pH before LiOH titration and after 70 ml LiOH is added.
name a metal that could be used in a future experiment to extract the copper from the copper ii nitrate solution.here
Calibration of a glass electrode gave a reading of 148.7 mV with 0.05 m potassium dihydrogen citrate buffer standard (pH = 3.766) and a reading of -167.4 mV with 0.01 m borax buffer standard (pH = 9.139), both measured at 30°C.
How does boiling point relate to freezing in this scenario. would the same one with the higher bioling point also have a lower freezing point. why
write balanced equations for the reactions of calcium metal with each of the following elements. a. h2 b. o2 c. s8 d.
Calculate the partial pressure of O2 produced from 1.71 liters of .64 M N2O5 solution at 45 degrees C over a period of 24 hours if the gas is collected in an 11.5 L container, assuming that the products dont dissolve in chloroform.
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