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Calculate standerd enthalpy of formation for dimand given that C graphite + oxygen(g) -------CO2(g) H = -393,5kj/m dimond(C) + O2(g)------CO2 (g) H = -395.1kj/m
What is the balanced chemical reactions that takes place when h2o2, concentrated h2so4, and Cu(s) is placed in solution. One of the byproducts should be copper sulfate (CuSO4) and there is some gas evolution during the reaction.
What should the analyst do to accuratley determine the concentration for the unknown using Beer's Law? Extending the calibration curve or using the equation for the line are not correct answers to this equation.
What mass in grams of carbon dioxide is produced if 85.0 mol of magnesium carbonate, MgCO3, are heated and allowed to decompose according to this equation? MgCO3(s)--> MgO(s) + CO2(g)
What mass of zinc oxide can be produced from the reaction of 415 g zinc sulfide with 265 g of oxygen gas? The other product is sulfur dioxide.
Carboxylic acids have higher than expected boiling points due to dimeric associations involving hydrogen bonding. The structure of 3-methylbutyric acid is shown below. Draw a second molecule of 3-methylbutyric acid
The Density of the air in the room is 1.19g/L. what is the mass, in Kg of the air in a room that measures 14.5ft x 16.5ft x 8.0ft?
Describe why this is based on the wavelength range that is transmitted. What color would you see if you mixed the two solutions with ?max = 520 and ?max = 610?
(FW 180.16 g/mol) is burned in a calorimeter whose heat capacity is 29.7 kJ/oK, the temperature increases by 2.635oK. Calculate the heat of combustion of fructose in kJ per mole.
What is the pH of a solution prepared by adding 66.0 ml of 0.100 M HCl to 43.0 ml of 0.200 M NaOH
prepare 100 mL each of five standard solutions: 2.00 x 10-5, 5.00 x 10-5, 1.00 x 10-4, 2.00 x 10-4, and 5.00 x 10-4 M. These will serve as your analytical standards, which means that their phosphate concentrations must be precisely known.
Suppose that 2.0mol H2 at 2.0atm and 25C and 4.0mol N2 at 3.0atm and 25C are mixed at constant volume. Calculate delta mix G. Also, what would be the value of delta mix G had the pressures been identical initially?
Determine the maximum number of electrons that can be found in each of the following subshells.
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