Explain why hydrogen and oxygen are transported as liquids rather than gases in a shuttle fuel tank

Explanation:

Oxygen takes up less space as a liquid than as a gas, so engineers can fit more oxygen into the same tank.

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d: the voltage of the secondary coil is less than that of the primary coil.

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the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.