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He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine