In general, when a substance says changes to a liquid

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

For the reaction c6h14(g) & longrightarrow; c6h6(g) + 4h2(g), δp(h2)/δt was found to be 2.5 x 10-2 atm/s, where δp(h2) is the change in pressure of hydrogen. determine δp(c6h14)/δt for this reaction at the same time.