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A rectangular block of plastic, measuring 2.50 cm by 1.12 cm by 1.41 cm, floats in the middle of the Pacific Ocean. The volume of sea water displaced by the plastic block is 2.37 cm3. Assuming the density of the sea water is 1.025 g/mL, what is the density of the plastic?
Consider a heat engine operating between 1200 K (TH) and 400 K (TC), What if we combust 1 liter of ethane to supply qh, how much work would we expect
2C2H6 + 7O2---> 4CO2 + 6H2O if the reaction produces 2.75 mol of H2O how many grams of CO2 are also produced?
Using the thermochemical data given for NO2 and N2O4 in class, determine the fraction of N2O4 that will dissociate into two NO2 molecules if one mole of pure N2O4 is introduced to a 10 liter constant volume,
Explain how a calibration curve could be used to determine an unknown quantity
Use data from appendix iib in the textbook to calculate the equilibrium constants at 25 degrees Celsius for each of the following reactions:
Use equations to obtain expressions for the following partial derivative for a diatomic ideal gas, assuming that the temp of the system is sufficiently low that only translational and rotational motions are thermally active.
A 4.50-g sample of LiCl at 25.0C dissovles in 25.0mL of water also at 25.0C. Th final equilibrium temerpature of the resulting solution is 60.8C
degree C is mixed with 35.2 g/mL of water (density = 1.0 g/mL) initially at 24.4 degree C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
Calculate the molarity of a solution made by adding 27.8 mL of concentrated hydrochloric acid (37.3 % by mass, density 1.19 g/mL) to some water in a volumetric flask, then adding water
A second-order reaction that destroys compound A via the reaction A to B is occurring in a batch reactor. It is 40% complete after 30 minutes. Determine the rate constant, and the time required to achieve 95% completion?
If a customer replaces a 85 watt bulb with an 20 watt compact fluorescent bulb that lasts 5000 hours, how much less coal (lbs)will be used to generate the electricity that is saved?
Determine the molarity of a solution of the weak acid HCl)2; Ka = 1.10*10^-2 if it has a ph of 1.25.
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