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How many grams of ethylene glycol (automobile antifreeze, C2H6O2) dissolved in 3.55kg of water is needed to lower the freezing point of water in an automobile radiator to -22.0?C?
A zero-order reaction has a constant rate of 2.00×10-4 . If after 50.0 seconds the concentration has dropped to 6.00×10-2 , what was the initial concentration?
Calculate the pH of a 25 mL distilled water sample after the addition of 1mL, 2mL, 3mL, 4mL
what is the theoretical yield of PbI2 in grams? g) if the student obtained .583 grams of PbI2 product after collecting it by filtration and drying it, what was the percent yield of PbI2 obtained?
A container holds equal masses of methane gas (molar mass 16.05 g/mol) and oxygen gas (O2, 32.00 grams/mol) The partial pressure of CH4 is how many times the partial pressure of O2?
Determine What is the difference in energy between the ground and excited state if the absorption spectrum of rhodopsin is centered at roughly 500. nm.? what is the probability of rhodopsin populating the first excited state At a physiological tem..
Infrared (IR) spectroscopy analysis: please refer to the IR spectra on the last page. a) One of the IR spectra was taken of 1-decene, and the other of decane. Which is which?
Weight of Water Required, Calculate the weight of water required to steam distill 500mg of bromobenzene at 95 degrees Celsius.
Draw the structure of methyl red, and explain why it absorbs in the visible region of the spectrum. using resonance, explain why the acid form has a wavelength of max absorption at longer wavelength
The vapor pressure of pure water at 70°C is 240. mm Hg. What is the vapor pressure depression of a solution of 150. g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 215 g of water?
Calculate the concentrations of all species in a 1.01 M Na2SO3 (sodium sulfite) solution
Describe an electrochemical cell that would have the following net equation, by answering the following questions. Fe(s)+Ni^2(aq)-->Ni(s)+Fe^2+(aq)
A 370. mL air sample collected at 35°C has a pressure of 550. torr. What pressure will the air exert if it is allowed to expand to 425 mL at 49°C.
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