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A gas is expanded in a cylinder from 2.00 L to 12.0 L against an external pressure of 1.80 atm. At the same time, it absorbs 2.56 x 103 J of heat from the surroundings. Calculate ?E of the gas in J. (1 L•atm = 101.3 J)
A mixture of CO, CO2 and O2 is contained within a 275 mL ?ask at 0?C. If the total pressure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr.
Calculate the potential delivered by a voltaic cell operating by the following reaction if all of the dissolved species have a concentration of 0.035 and the pressure of H2 (g) is 1.00 atm.
If the sign for delta G is negative (spontaneous process) and the sign for delta S is positive (more disorder) for both dissolving processes, how could one be endothermic (positive delta H) and one be exothermic
The average per month of energy use is 879 kWh (kilowatt) of electricity. If the price of one kWh is $0.0668 how much money will spend on electricity for one year?
how long was the flight? How far did it travel in the horizontal direction before landing? What was the highest altitude it reached? Neglecting air friction at what angle should the projectile have been fired to maximize the horizontal range.
The stock solution is 500 ?g/mL and you want to obtain a final concentration of 1?M. What volume of the stock solution do you need to make 10 milliliters of the 1 ?M solution? Also: What is the molar mass of PMA?
For the reaction 2 HCl + Na2CO3 → 2 NaCl + H2O + CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP
Describe how you would construct your target electrochemical cell, including the identities and concentrations of all chemical species, as well as a diagram of the setup.
A 35.0 mL sample of 0.225 M HBr was titrated with 42.3 mL of KOH. What is the concentration of KOH?
How would the following modifications of the experimental procedure used in this experiment affect the mass of the precipitate collected? Indicate whether the mass would be greater than, unchanges, or less than that obtained. Briefly explain the ..
Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 17?C.
A solution is prepared by mixing 13.00ml of 0.0021M (aq) Hg2(NO3)2 with 25.0ml of 0.015M HCl. Assume that volumes are additive.
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