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Consider a container of volume 5.0 dm3 that is divided into two compartments of equal size. In the left compartment there is nitrogen at 1.0 atm and 25°C; in the right compartment there is hydrogen at the same temperature and pressure. Calculate the entropy and Gibbs energy of mixing when the partition is removed. Assume that the gases are perfect.
Calculate the work done on a 2500. kg car in accelerating it from rest to a speed of 100. km/hr.
A 135 mL sample of a 15.0 M ethylene glycol (rm C_2H_6O_2) solution is diluted to 1.50 L.What is the freezing point of the final solution.
An aqueous CaCl2 solution has a vapor pressure of 82.1 mmhg at 50 C . The vapor pressure of pure water at this temperature is 92.6 mmhg What is the concentration of in mass percent?
Calculate the boiling point (in Celsius) of 25% of an antifreeze in water. The antifreeze is a covalent compound with a molar mass
A 578 mL sample of hydrogen gas was collected over water at 25°C and a pressure of 783 torr. If the pressure of water vapor is 24.0 torr at 25.0°C, what mass of hydrogen gas (g) was collected?
a solid block of exactly 100.0 cm3 has a mass of 153.6g. Determine its density. will the block sink or float in water
C2H4+3O2= 2CO+2H2O if 2.70 mol C2H4 is reacted with 6.30 mol O2 a. identify the limiting reagent
How many mL of 0.25 m NaOH solution are required and What is a standard soluyion in an acid-base titration
Calculate the quantity of NH3 is produced upon reaction of 4.0 moles of water and 65.0 g of CaCN2.
Analysis of corrosion mechanisms and preventative measures
A solution is prepared by dissolving 27.1 g urea, (NH2)2CO, in 171.2 g water. Calculate the boiling point of the solution. Urea is a nonelectrolyte.
Calcium in a mineral was analyzed five times by each of two methods. Are the mean values significantly different at the 95% confidence level? Method1: 0.0271 0.0282 0.0279 0.0271 0.0275 Method2: 0.0271 0.0268 0.0263 0.0274 0.0269 Chemistry
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