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What mass of oxygen gas is required for the complete combustion of 6.12g of propane (C3H8) to produce CO2 and H2O?
What are q and w (in kJ) for the reaction of 53.0 g of Na(s) and 48.0 g of Cl2(g) to produce NaCl(s) at 1 atm and 298K
zinc reacts with hydrochloric acid according to the following balanced chemical equationzn s 2 hclaq zncl2aq h2ga
disintegrations per minute per gram of carbon. Using the half-life of carbon-14, 5715 yr, calculate the age of the charcoal sample.
An alkyne of six carbon atoms gives the same single product in its reaction either with BH3 in THF followed by H2O2 /OH-, or with H2O/Hg2 /H3O . Draw the structure of the alkyne (containing only carbon and hydrogen atoms).
A ballon is filled with H2 gas and has a pressure of 1.10 atm, volume of 10.2L, and a temp of 298 K. How many grams of H2 gas are in the sample
The mass of a beaker is 7.839g. After 7.50 mL of hexane, C6H14, is pipetted into the beaker, the combined mass of the beaker and the heaxane sample is 12.806g. What is the measured density of hexane?
Self contained self rescue breathing devices convert CO2 into O2 according to the following reaction: 4KO2(s) + 2CO2(g) -> 2K2CO3(s) + 3O2
A 158.5mg sample of pure copper is dissolved in a small amount of nitric acid, giving copper(II) ions in solution. This solution is then diluted to a final volume of 1.00L. What is the molar concentration of copper(II) ions in the final solution
a 255-ml flask contains pure helium at a pressure of 745 torr. a second flask with a volume of 455 ml contains pure
The molar heat capacity of ethane is represented in the temperature range 298 k to 400 k by the empirical expression C(p,m)/(J K-1 Mol-1) = 14.73 + 0.1272 (T/K). Calculate the standard enthalpy of formation of ethane at 350 K from its value at 298..
a how many atoms of helium gas fill a spherical balloon of diameter 31.0 cm at 18.0degc and 1.00 atm?b what is the
Calculate pCd2 at each of the following points in the titration of 55.00 mL of 0.0020 M Cd2 with 0.0020 M EDTA in the presence of the auxiliary complexing agent NH3.
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