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A typical automobile engine works with a cylinder temp of 2000 degrees C and an exit temp of 800 degrees C. A typical ethanol fuel (molar mass 46.07 g/mol) has an enthalpy of combustion of -1364 kJ/mol and 1 dm^3 has a mass of 0.77kg. Calculate the maximum amout of work that could be performed by the combustion of 10dm^3 of fuel.
A sample of oxygen that occupies 1.00x10^6mL at 575 mmHg is subjected to a pressure of 1.25 atm. What will the final volume of the sample be if the temperature is held constant?
Which of the following would be expected to have the highest pH?
How many grams of CH4 is needed to produce 33.5 g CHCl3.
Calculate the volume of chlorine gas in liters, measured at 20 C and 762 mm Hg, required to react with this volume of seawater.
Why is the intercept of a calibration curve of absorbance vs concentration not zero?
What mass of H2 forms if 12 grams of Zn reacts with 7 grams of HCl?
Calculate the energy in J of a photon in the radar region of the electromagnetic spectrum that has a wavelength of 24.3 cm. Express answer in scientific notation.
When sodium sulfate, Na2(SO4), is dissolved in water, the temperature goes down. How would you describe the energetics of this process?
Which would involve the emission of a higher frequency of light, the transition of an electron in an H atom from the n = 5 to the n = 3 level or a similar transition in an X atom?
If 15.0 mL of glacial acetic acid (pure HC2H3O2) is diluted to 1.70 L with water, what is the pH of the resulting solution? The density of glacial acetic acid is 1.05 g/mL
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
what is the minimum number of photons you would need to interact with these atoms in order to have all of their electrons promoted to the n = 3 level? What wavelength of light would you need to perform this experiment
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