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A gaseous fuel mixture stored at 745mmHg and 298 K contains only methane CH4 and propane C3H8. When 11.5L of this fuel mixture is burned, it produces 774kJ of heat. What is the mole fraction of methane in the mixture? (Assume that the water produced by the combustion is in the gaseous state.) I've tried 27.3%, 67%, and 40.7% and they're wrong.
The Group 5A elements can form molecules or ions with thre, five or six covalent bonds. Predict the molecular structure and hybridization of the following substances: NH3, AsCl5 and PF6-.Why does't NF5 or NCl6- form
You are going to a birthday party and you want to give the children balloons filled with He gas. How many balloons can you fill to a volume of 2 liters if the internal gas pressure of the tank
How many moles of carbon monoxide are needed to produce 48.0 L of hydrogen gas according to the following reaction at 0 C and 1 atm carbon monoxide (g) + water (l) ------carbon dioxide (g) + hydrogen (g)
If the original sodium tartrate solution had a concentration of 1.00 M instead of .100 M, what would the concentration of copper be in a solution created by combining 10 mL of it with 10 mL of the copper (II) sulfate solution. Use the Ksp you foun..
at a certain temperature the vapor pressure of pure benzene c6h6 is 0.930 atm. a solution was prepared by dissolving
In which of the following would the bonding be weakened with the addition of an electron to form the negative molecular ion?
Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to significant digits
Why does bromine add faster to a disubstituted double bond than a monosubstituted double bond to produce dibromides
Reaction of an Alcohol to Produce an Alkyl Halide, N-butanol reacts with NaBr and H2SO4 to produce n-butyl bromide, via refluxation reaction in a lab experiment.
Titrations: Finding Mass Percent of Arsenic in a Pesticide, The arsenic in a 1.0211-g sample of a pesticide was converted to H3AsO4 by suitable treatment. The acid was then neutralized and exactly 40.00 mL of 0.05922M
According to Avogadro's law, how many liters of hydrogen are required to react with 1.9L of oxygen at STP.
One can approximate boiling point at reduced pressure using a pressure-temperature nomograph. What would you expect the observed boiling point to be at 50 torr for a liquid that has a boiling point of 280 degrees celsius at 760 torr
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