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A gaseous fuel mixture stored at 748 mmHg and 298 K contains only methane CH4 and propane C3 H8. When 11.2 L of this fuel mixture is burned, it produces 769 kJ 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.)
The NaOH Solution with a concentration of .188M is used to titrate a diprotic acid of unknown concentration. 25.00 mL of the acid solution requires 26.54 mL of NaOH solution. What is the concentration of the acid solution
What is the age of a rock whose 40Ar /40Kratio is 1.25? The half-life of 40 K is 1.28 times 10^9years Formulas ln(N)t/(N)o =-k+ + 1/2 =0.693 /k
what is the redox reaction for MnO4- + 8H+ +5Fe2+ ______ Mn2+ + 5Fe3+ + 4H2O and which ion is oxidized and which one is reduced
What effect on the temperature of a boiling liquid and on its distillation temperature is produced by a soluble, nonvolatile impurity?
Calculate the volume of the acid solution needed to completely neutralize the base in the flask, 2.Calculate the pH for the initial base solution in the flask ;the point at which 20mL of the acid has been added
Activating effects question: Using resonance contributors, explain why the nitrile group is a deactivator and a meta director in electrophilic aromatic substitution. A drawing would be helpful too.
identify the oxidizing agent in the reaction Mg+2HCl=H2+MgCl2, the generation of hydrogen gas in the laboratory.
when carbon monoxide was burned with excess air at constant pressure and the measured temperature of exit gases
The heat of solution of ammonium chloride (NH4Cl(s)) in water is +14.7 kJ/mol. Calculate the mass (in g) of NH4Cl(s) required to change the temperature of (1.2550x10^2) ml of water from (2.440x10^1) °C to (5.30x10^0) °C.
An unknown gas is held in 2 separate containers with identical number of moles of gas. The volume of container 2 is 0.347 L and has a pressure of 0.315 atm. The volume of container 1 is 1.145 L. What is the pressure of the unknown gas in container..
calculate the mass of nitrogen dissolved at room temperature in an 82.0 rm l home aquarium.assume a total pressure of
Name the stereoisomers formed by oxidation of (S)-4-methylcyclohexene with osmium tetroxide.
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