Which substance has the higher boiling point: CH3CH2CH2CH3 or CH3CH2CH2CH2CH3? Explain.

n-pentane

Explanation:

The longer the alkyl chain, the greater the opportunity for Van der Waals interactions between chains. Thus as the chain length increases, the boiling point increases

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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