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Consider a cylinder of a gasoline engine at the beginning of the compression cycle, during which a fuel/air mixture (for our purposes mostly composed of nitrogen and oxygen, i.e. an ideal diatomic gas) at 300 K and 1 bar is compressed down to the 1/10th volume (compression ratio of 10:1). Assume that the compression is rapid so no heat exchange occurs with the environment. Calculate the pressure and the temperature of the compressed gas. In a diesel engine the compression ratios are typically much higher; redo the same calculation for the compression ratio of 20:1.
Purpose a mechanism for Sn2 reaction 1-chlorobutane with sodium iodide in acetone.
how much energy is released when 89 grams of water vapor (steam) is cooled from 503 K to 354 K?
How much energy is needed to raise the temperature of 16.0g of gold by 17.0degrees C, Answer in units of J
What mass of barium sulfate is produced when 100.0 mL of a 0.100 M solution of barium chloride is mixed with 100.0 mL of a 0.100 M solution of iron(III) sulfate.
A solution is prepared by dissolving 270 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
sample of unknown HCL solution reacts completely with Na2CO3 to form 15.1g CO2, What was the concentration of the HCL solution?
The pressure is changed to 8.75 atm and the gas is cooled to 15 C. Calculate the new volume of the gas using the ideal gas equation.
When 0.105 mol propane is burned in an excess of oxygen, how many moles of oxygen are consumed? The reaction is C3H8 + 5 O2 ? mol O2 = 0.105 mol C3H8 How many grams of nitric acid are produced for every 100.0 g NO2 that reacts?
The resultant mixture is then evaporated in a kettle to produce a jam contain- ing 67 wt % soluble solids
Calcium carbide, CaC2 reacts with water to form acetylene. CaC2(s)+2H2O(l) ==> C2H2(g)+ Ca(OH)2(s)
Since the freezing point of a solution depends on the number of particles, what would you expect the freezing point of 0.1 m solutions of aqueous NaCL and BaCl2?
Calculate how much water must melt in order to reach exactly 0 degrees celsius at thermal equilibrium. b) Calculate the entropy changes for ice, liquid water and the total entropy change.
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