propane boils at a lower temperature than water. this reveals that propane is attractive forces are

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Answer 1

Propane boiling at a lower temperature than water indicates that propane molecules have weaker intermolecular attractive forces compared to water molecules.

The boiling point of a substance is the temperature at which its vapor pressure equals the atmospheric pressure, causing the substance to transition from a liquid to a gas phase.

Propane (C3H8) is a hydrocarbon gas, and its molecules are held together by relatively weak London dispersion forces, which result from temporary fluctuations in electron distribution.

These forces are weaker than the hydrogen bonding present in water (H2O), which involves the attraction between the partially positive hydrogen atom of one molecule and the partially negative oxygen atom of another.

The stronger intermolecular hydrogen bonding in water requires more energy to break the bonds and transition from the liquid phase to the gas phase, resulting in a higher boiling point compared to propane. Propane's weaker intermolecular forces allow its molecules to escape the liquid phase more easily, requiring less energy and a lower boiling point.

In summary, the lower boiling point of propane compared to water suggests that the attractive forces between propane molecules, namely London dispersion forces, are weaker than the hydrogen bonding present in water.

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The factory calibration temperature for a 100-foot steel tape is:
A. 62 degrees F.
B. 78 degrees F.
C. 68 degrees F.
D. 18 degrees F.
E. None of the above

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In conclusion, the answer to the question is E, none of the above since the factory calibration temperature for the 100-foot steel tape is not provided.

The factory calibration temperature for a 100-foot steel tape is not provided in the question. However, it is important to note that steel tapes can have different factory calibration temperatures depending on their length, material, and other factors. Generally, factory calibration is done at a specific temperature to ensure that the tape accurately measures distance. If the temperature during use deviates from the calibration temperature, the measurements may not be accurate. Therefore, it is important to follow the manufacturer's guidelines for temperature use and calibration to ensure the tape's accuracy. In conclusion, the answer to the question is E, none of the above since the factory calibration temperature for the 100-foot steel tape is not provided.

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