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Explain Burning in pure oxygen, the hydrocarbon gas butane, C4H10, produces carbon dioxide and water. If 0.30 moles of butane are burned, define how many moles of carbon dioxide and water are formed?
a mass of 48.5 g of a certain substanse can be disolved in 29.1 cm3 of water at 20 degrees celcius. Calculate the solubility of this substance per gram of water at the same temperature.
Suppose that all 175 L of liquid nitrogen in a tank accidentally vaporized in lab that measured 10.00 m X 10.00 m X 2.50 m. What maximum fraction of the air in the room is displaced by the gaseous nitrogen?
what is the species list when titrating with hydrochloric acid? Aniline (benzenamine) has the formulas C6H5NH2. Its conjugate acid is C6H5NH3+.
Calculate the standard entropy change for the reaction 2Na(s) + Cl2 (g) --> 2NaCl (s) using the data from the following table: Substance Change in h Change in G S degrees 0.00 0.00 51.30 0.00 0.00 223.1 -411.0 -384.0 72.10
Hydrogen has an electronegativity value between Boron and carbon and identical to phosphorous. With this in mind, rank the following bonds in order of decreasing polarity
What volumes of CO2 and NH3 at 201 atm and 450.°C are needed to produce 2.54 kg of urea, assuming the reaction goes to completion?
Arrange the following ionic compounds in order of decreasing amount of energy released in lattice formation: LiF, CaO, InN and KBr
An alloy is 80% by volume iron. The rest is aluminum. Aluminum has a density of 2.70 g/cm³, and iron's is 7.87 g/cm³. A block of alloy measures 2.0 ft. wide and 3.0 ft. long, if the block contains 25.8 pounds of aluminum, how thick is the block
The mass of a cube of iron is 252 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
Does 4 mL of 5% NaOH contain enough base to completely neutralize 125 mg of benzoic acid. Show your stoichiometry calculations.
How much heat must be supplied at 1000 degrees C if 1000 J of useful work is to be done by the engine?
If a solution is made from 100 g of pentane and 100 g of hexane, what will be the mole fraction of pentane in the gas phase over that solution (if only hexane and pentane vapor are present)? Assume no deviation from Raoult's law
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