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The standard molar heat of formation of water is -285.8 kJ/mol. Calculate the change in energy required in making 50.0 mL of water from its elements under standard conditions.
When the following equation is balanced using the smallest possible integers, what is the number in front of the substance in bold type. Na2S2O3 + I2 ? NaI + Na2S4O6
If you have a beaker of gas and all of the gas in that beaker is moved to a container half the size, the temp is maintained, what would the gas look like
0.1M HCl is added into a mixture of 25mL of water and 25mL of Ca(OH)2. For the end point to be reached 1.5mL of 0.1M HCl is added into the mixture
When temperature and pressure confitions are not too severe, equations of state me be integrated explicitly to determine the fugacity of a gas. Derive an expression for ln(f/p) for a van der Waal's gas.
the denisty of pure silver is 10.5gmcmltsupgt3ltsupgt at 20 degrees celcius. if 5.25 g of pure silver is added to a
What is the mass of precipitate (in Grams) that forms when 235.5 mL of 0.129 M Na2SO4 solution is reacted with excess Ba(NO3)2 solution?
What is the range of acetaminophen dosages, expressed in mg accetaminophen/kg body weight, for chidren who weigh between 24 and 35 b?
Pure substances include: choose one below: elements only elements and compounds compounds and mixtures elements and mixtures all matter
suppose that you are the chief economic advisor to the president of the united states. you are asked to propose a
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K.
An aqueous CaCl2 solution has a vapor pressure of 80.8 mmHg at 50C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent
What force keeps the gases of the earth's atmosphere from diffusing into interplanetary space, where the pressure is essentially zero?
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