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(a) Calculate ?Ssys (in Joules) when 20.0 moles of oxygen gas undergo an isothermal reversible expansion from 30.0 L to 80.0 L.
(b) Calculate ?Ssurr (in Joules) for the above process.
(c) Calculate ?Suniv (in Joules) for the above process.
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A dessert contains 131.55 g of vanilla ice cream, 90g of fudge sauce, and 40.0 g of nuts. What is the total weight, in pounds, of the dessert?
Calculate the volume in milliliters of a 1.8 mol/L iron(II) bromide solution that contains 150.g of iron(II) bromide FeBr2. Round your answer to 2 significant digits.
Why does a hydrate exist only as a solid? What characteristic of a hydrate is responsible for this phenomenon?
A decompression chamber used by deep-sea dives has a volume of 10.3 m 3 and operates at an internal pressure of4.5atm. What volume, in m 3 would the air in the chamber occupy if it were at 1 atm pressure, assuming no t ...
A 3.15- sample of NH4NO3 is introduced intoan evacuated 2.26- L flask and then heated to 245 C. What is the total gas pressure, in atmospheres, in the flask at245 C when the NH4NO3 has completely decomposed?
An analysis of an oxide of nitrogen with a molecular weight of92.02 amu gave 69.57% oxygen and 30.43 % nitrogen. What is the empirical formula of the compound?
A 44.0 g sample of an unknown metal at 99.0 o C was placed in a constant-pressure calorimeter of negligible heat capacity containing 80.0 mL water at 24.0 o C. The final temperature of the system was found to be 28.4 ...
How many grams of H2SO4 must be dissolved into 0.709 L of solution to generate a concentration of 0.303 M?
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 22.15 g Fe2O3 and 15.98 g CO. Once the reaction has occurred as completely as po ...
The Earth receives approximately 2 x 1014 kJ/s of solar energy. What mass of solar material is converted into energy each second to produce this much energy
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