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A beaker of water comprises a thermodynamic system. The system undergoes a process in which the system loses 14KJ of heat to the surroundings while the surrounding performs 20KJ of work on the system.
In the above scenario, t he surrounding performed 20KJ of work on the system. How much heat would the system have to have gained or lost in order for the internal energy of the system to have remained constant throughout the process. You must show all work and be explicit about whether and how much heat the system gained or lost.
how much energy in joules does it take to raise 25.0g of liquid ethanol at 25.0degc to 78.0degc and then evaporate?
Suppose that a fully charged lead-acid battery contains 1.50 of 5.00 . What will be the concentration of in the battery after 3.90 of current is drawn from the battery for 5.50
Consider the following electrochemical cell at 298 K. One compartment contains a 1.00-M solution of silver nitrate. The other compartment contains a saturated solution of silver iodide
What mass of iron is needed in order to supply the energy needed to warm 15.0mL of water (d= 1.00 g/cm3) from 23C to 37C
N2(g)+3F2(g)-->2NF3(g). If 1.7 g of nitrogen and an excess of fluorine is used in the reaction, what mass (g) of NF3 can be produced
How long will it take for 20% of the U-238 atoms in a sample of U-238 to decay. If a sample of U-238 initially contained 1.4×1018 atoms when the universe was formed 13.8 billion years ago, how many U-238 atoms will it contain today
Utilizing the metallic crystal is known to be a cubic closes packed structure, find out the density of the metal in g/cm3 using 900nm.
What is the volume of dry gas at STP of a gas collected over water that has a volume of 596 mL at 40 C and pressure of 101KPa
You have two solutions of the same molar concentrations; one contains lactic acid, the other sodium lactate. You want to use these solutions to make a buffer that has a pH of 5.00. Calculate the ratio of lactate and lactic acid required. The pKa o..
What mass of water (in grams) forms from the reaction of 2.66 L of hydrogen gas and 2.06 L of oxygen gas. Both gases are at 759 torr and 7.9 oC.
The kidneys filter blood plasma across a specialized structure, called the glomerulus, that is permeable to small molecules (water, salts, glucose, etc.) but not to proteins.
What is the pH of the buffer that results when 11 g of NaCH3CO2 is mixed with 85 mL of 1.0 M CH3CO2H and diluted with water to 1.0 L? (Ka of CH3CO2H = 1.8 ´ 10-5)
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