Can the empirical formula determined from chemical analysis be used to tell the difference between pantene C5H10 and Neptune C7H14? ​

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.