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Determine the volume of oxygen gas required to completely combust 5.5 mol of propane (C3H8) in a barbecue at 101.3 kPa and 28.0°C.
A) calculate the number of moles of iodine and the number of moles of hydrogen iodide in the equilibrium mixture B) write an expression for Kc for the equilibrium
Asteroids are mainly composed of metals like iron and nonmetals like carbon. Briefly explain the differences between metals and nonmetals based on your knowledge of the periodic table.
Analyze the groups bonded to the carbon of interest. Every H contributes +1, and every oxygen contributes -2. An -OH group contributes (-2 + 1 = -1). Ignore carbons bonded to the carbon of interest. The sum of the oxidation states must be zero, si..
Discuss the role of the courage of children in both Little Women (Louise Alcott) and Treasure Island (Robert Louis Stevenson).
Octane is a main component of the gasoline for cats and trucks. While octane burns it produces carbon dioxide, water and energy. 43 500 kJ of energy is needed to drive a car 350 km. compute how many grams of octane are needed to provide this amoun..
As part of a soil analysis on a plot of land, you want to determine the ammonium content using gravimetric analysis with sodium tetraphenylborate, Na B(C6H5)4-. Unfortunately, the amount of potassium, which also precipitates with sodium tetrapheny..
The heat capacity of the calorimeter was 24.5J/0C and contained exactly 1250g water which increased from 24.620C to 27.430C. Calculate (Delta)U for the reaction in kJ/mol rxn
Alkanes are organic molecules that contain only carbon and hydrogen atoms connected through single bonds. In the IUPAC naming system, all alkanes end in the suffix ane and begin with a prefix determined by the number of carbon atoms in the molecul..
Find a national newspaper (New York Times, Washington Post, Los Angeles Times, etc.) or science magazine (New Scientist, Wired, etc.).
Someday, cars may be powered by clean H2/O2 fuel cells and electric motors. Under standard conditions, such a fuel cell can develop 1.229 volts. If the oxygen is obtained from air (at P=0.21 bar), what pressure of H2 would be required to develop 1..
An aqueous solution of hydrogen peroxide, H2O2 is 30.0% by mass and has a density of 1.11g/mL. What is the molarity of H2O2 (FW 34.02) in this solution
Amoxicillin is an important antibiotic. It can be obtained by an enzyme catalyzed reaction in aqueous solution. To ensure product stability and enzyme activity, you need to run the reaction in a buffer system at a pH of 7.30. a) Using the list pro..
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