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While backpacking in the wilderness hikers often boil water to sterilize for drinking. Presume you are planning a trip and need to boil 30 L of water for your group. Explain what volume of fuel should you bring? Presume the following the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water (the rest is lost to the surroundings), the density of the fuel is .78g/mL, the initial temperature of the water is 25 degrees C; the standard enthalpy formation of C7H16is -224.24kJ/mole
Assume that 29.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a 0.10 M solution of the monoprotic strong acid HX.
how many unshared electron pairs must be included in the lewis structure for water , H2O? a-0 b-1 c-2 d-3 f-4
E85 fuel is a mixture of ethanol and gasoline. What mass in kilograms of E85 (d=0.758g/mL) can be contained in a 14.0 L gallon tank.
An X-ray photon of wavelength 0.930 strikes a surface. The emitted electron has a kinetic energy of 940 . What is the binding energy of the electron in kJ/mol
Compute the energy joules per particle of a photon of wavelength 45.8nm. Planck's constant is 6.63 x 10^-34 J.s
An emission line from K atoms is found to have two closely spaced components, one at 766.70 nm and the other at 770.11 nm. Account for this observation, and deduce what information you can.
With a solution in them connected by a liquid salt bridge junction filled with KNO3. In one solution you have a graphite electrode that is connected with a wire to a copper electrode in the second soution.
a. calculate the energy change in j associated with an electron transition from the n 3 to n 2 in a bohr
how many pi bonds are there in a molecule of crotononitrile?how many sigma bonds are there?how many nonbonding valence
Calculate (approximate) the pH of a 0.30M solution of ascorbic acid. Must use an ICE table (Initial Concentration, Change in Concentration, Equilibrium Concentration) and the quadratic formula unless the "x is small" approximation can be used.
Reaction of 1-methylcyclopentene with HBr might, in principle, lead to a mixture of two alkyl bromide addition products. Draw these two alkyl bromides.
Draw the structures of the products of the neutralization reaction between pyridine and propanoic acid. Include lone pairs on the appropriate atoms.
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