Physics

Physics, 27.07.2019 02:30, genyjoannerubiera

The combustion of a single molecule of methane produces about 10 ev of energy. a methane molecule has a mass of 16 amu. the fission of a uranium-235 atom produces about 189 mev of energy. based on these numbers, about what mass of methane will produce as much energy as a single gram of uranium-235?

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Chemistry, 25.06.2019 10:10, deaishaajennings123

For each of the following situations, you are asked which of two objects or substances has the higher energy. explain your answer with reference to the capacity of each to do work and say whether the energy that distinguishes them is kinetic energy or potential energy. a. (1) a methane molecule, ch4, in the stratosphere or (2) a ch3 molecule and a hydrogen atom formed from breaking one of the carbon-hydrogen bonds in a ch4 molecule. b. (1) a water molecule moving at 1.63 × 103 mi/h or (2) the same water molecule moving at 1.81 × 103 mi/h. (these are the average velocities of water molecules at 110 °c and 200 °c.) c. (1) iodine solid or (2) iodine gas. (assume that the two systems are at the same temperature.) d. (1) a nitrogen monoxide, no, molecule and an oxygen atom in the stratosphere or (2) the no2 molecule that can form when they collide. e. (1) two bar magnets pushed together with the north pole of one magnet almost touching the south pole of the other magnet or (2) the same magnets farther apart. f. (1) a water molecule moving at 1.63 × 103 mi/h or (2) a uranium

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Chemistry, 24.07.2019 10:00, kellyroy74

In a methane molecule (ch4), there are 4 single covalent bonds. in an octane molecule (c8h18), there are 25 single covalent bonds. how does the number of bonds affect the dispersion forces in samples of methane and octane? which compound is a gas at room temperature? which is a liquid?

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Physics, 28.07.2019 13:30, raam360

What reaction would the chemical equation ch4 + 2o2 →2h2o + co2 represent? a. decomposition of methane b. formation of methane c. combustion of methane d. replacement of methane

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Chemistry, 11.10.2019 10:50, rebecca7415

Methane (ch4) is the main component of natural gas. it is burned for fuel in a combustion reaction. the unbalanced combustion reaction for methane is shown below. ch4 + o2 co2 + h2o + heat when the reaction is balanced, how many carbon dioxide molecules are produced for every methane molecule burned?

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