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Although there are a great variety of lipid structures, most lipids contain: A) A large hydrocarbon portion and no polar groups B) A large hydrocarbon portion and a few polar groups C)A large polar portion and no hydrocarbon groups D) A large polar portion and a few hydrocarbon groups
Using standard enthalpies of formation from Appendix 2A, calculate the standard reaction enthalpy for the following reaction, the final step in the production of nitric acid
An automobile gasoline tank holds 49kg of gasoline. When the gasoline burns, 172kg of oxygen are consumed and carbon dioxide and water are produced.
How many moles of CO(NH2)2 are present in 150 g of water, if the freezing point of the solution is -4.02C? kf(water) = 1.86 K · kg/mol.
Give an acceptable name and identify the functional group; and
What volume of the solution must be used to make 800 mL of 0.15 M. potassium permangate from a 0.20 M. potassium stock solution.
a balloon filled with helium gas has a volume of 762 mL at a pressure of 1atm. The balloon is released and reaches altitude of 6.5km, where the pressure is 0.5atm.
A sample of gas with a volume of 750 mL exerts a pressure of 98 kPa at 30 c. what pressure will the sample exert when it is compressed to 250 mL and cooled to -25 degree celsius.
A mole of photons in the blue visible region of the electromagnetic spectrum has an energy of 2.54 × 10 2 kJ/mol, calculate the frequency in s-1 of the photon.
What should the analyst do to accuratley determine the concentration for the unknown using Beer's Law? Extending the calibration curve or using the equation for the line are not correct answers to this equation.
in one experiment .886 mole of NO is mixed with .503 mole of O2. calculate which of the two reactants is the limiting reagent . calculate also the number of moles NO2 produced
What is the volume in the beaker with the aqueous solution NaCl of when equilibrium is attained, assuming ideal behavior? Part C: What is the volume in the beaker with the aqueous solution of a nonvolatile nonelectrolyte when equilibrium is attain..
Consider the unbalanced equation above. A sample of impure mercury(II) oxide is heated and the HgO decomposed completely. If 580. mL of O2 is collected by displacement of water at a barometric pressure of 790.0 mm Hg and 25.0°C,
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