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2.3 mol of Helium at 20'C and 5.0 atm are allowed to expand reversibly and adiabatically until the pressure reaches 1.0 atm. Determine ΔSsys separately for the volume and temperature changes and show that ΔSsys=0 for a reversible adiabatic process. Also, if the expansion had instead occurred irreversibly against a constant external pressure of 1 atm, now what are ΔSsys, ΔSsur and ΔSuniv? Can someone please help?
Household vinegar is 5.0% acetic acid (CH3COOH). IF you have 240.0 mL of vinegar, how many molecules of CH3COOH would there be?
gram sample of a gaseous hydrocarbon has a volume of 820 ml when measured at 227 degrees Celcius and 2.50 atm.
The determination of iron in industrial waste stream is often carried out by reacting the water sample with o-phenanthroline to form a red-orange complex that absorbs at 510 nm.
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of a mixture of 2.00 lb of NaCl and 12.00 pounds of ice if exactly half of the ice melts?
If I ate to eggo waffles with lite syrup, 1 egg with a little bit of hot sauce with a bottle of water and I do Leslie Sansone's Just walk belly blasting walk with two workouts and two fast miles exercise video after I at that.. Will I have burned of..
A sample of hydrogen occupies a volume of 1.20 liters at a pressure of 425 kilapascals. If the temperature of the gas is constant, what would the new volume of the gas be at 615 kilapascals?
Dissolving 3.00 g of an impure sample of CaCO3 in an excess of HCl acid produced .656 L of CO2 (measured at 20 degrees C and 792 mmHg). calculate the percent by mass of calcium carbonate in the sample. State any assumptions.
Radio waves travel at the speed =3.00 108 m/s(speed of light,). if Saturn is 7.9 108 km from Earth then Determine how many minutes does it take for a radio message to reach Earth from Saturn?
She drinks a lot of water and has consume milk of magnesia(ph value 10.5) before she feels comfortable again. State the pH values of water and blood and whether its acidic or alkaline.
A container (8.65-L ) holds two gases mixture at 31 °C. The partial pressures of gas X and gas Y, respectively, are 0.206 atm and 0.867 atm. If 0.200 mol a third gas is added with no change in temperature or volume determine the total pressure be..
Equilibrium shift of the reaction and the pH of solution, 1. The pressure on each of the following systems is decreased from 5 atm to 1 atm. Which way does the equilibrium shift in each of the following systems?
Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal bioling point of -0.4 celsius. A 250 Ml sealed flask contains 0.55 grams of butane at -22.0 celsius. How much butane is present as a liquid?
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