Personnel in wheeled vehicles should take what action before vehicle wash down?

Turn off the engine of the car and close the car windows.

Explanation:

Before going into the car wash, personnel still sitting in the car must turn off the engine of the car so that nothing unfortunate may occur. The most important action that must be taken is the closing of windows.

If the windows are kept open, the person sitting will also get a wash alongside. All the soap and water will rush into the car and it can very quickly turn into a miserable experience.

according to kinetic-molecular theory, the following would not be considered an ideal gas:

a gas at very low volumes, when gas particles are very close together

a gas at very low temperatures, when gas particles have very little kinetic energy a gas

a gas with highly polar molecules that have very strong intermolecular forces

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sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell