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Compute the work for a system that absorbs 150 kJ of heat in a process that leads to an increase in internal energy of 120 kJ. Is a work done on or by the system during this change? Explain your reasoning
if 77.0 ml of hydrogen gasis collected over water at 50 degree celsius and 763 mm hg what is the volume of dry gas at
Calculate the conditional formation constant Kf for the formation of an EDTA complex with copper (II) at a pH of 5.00, if log Kf= 18.80
consider the reaction : 3A (g) + 2B (g) = 4 C (g) a ) determine the expression for the rate of the reaction with respect to each of the reactants and products
A quantity of N2 occupies 62.2 L at a particular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
You made up a saturated solution of calcium sulfate (CaSO4). The temp is 25 degrees Celsius. You then add 5.00*10^-3 of sodium sulfate (Na2SO4). What are the concentrations of calcium and sulfate after equilibrium is reached? The pKs of CaSO4 is 4..
A 45.0-L steel tank at 20.0°C contains acetylene gas, C2H2, at a pressure of 1.39 atm. Assuming ideal behavior, how many grams of acetylene are in the tank?
when 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water the solution freezes at -2.16degc. what
Write a clear, and complete answer to the following question. Your answer should be directed towards a first year Chemistry student. What is the relationship 22.4 L/mol describe. What is assumed
Preparation of an ally phosphonate and synthesis of a conjugated diene. Write out the complete mechanism for the reaction.
solid iron reacts with chlorine gas to produce ironiii chloride. if 10.0 grams of iron reacts with excess chlorine gas
In a laboratory experiment, students synthesized a new compound and found that when 14.10 grams of the compound were dissolved in 208.0 grams of ethanol, the solution began to boil at 78.9510C
If a 45.6-g sample that is 98.5% K2Cr2O7 by mass is allowed to react with 305 ml of HCl with a density of 1.15 g/ml and 30.1 % by mass, how many grams of Cl2 are produced
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