Its 20.17 to find it you can look on your periodic table and look for neon which is Ne and if you look at the bottom or at the key it should show you were atomic mass would be â¦ found. Most of the time its found on the bottom under the name.
High Resilience foam, or HR foam, is open-cell, flexible polyurethane foam that has a less uniform (more random) cell structure that helps add support, comfort, and resilience or bounce.hile HR foams are a significantly smaller part of what Bergad offers, we do offer foams in a wide range of physical characteristics, with: 1  Densities from 2 to over 30 pounds per cubic foot, 2  Firmnesses (25% IFD) from 15 to over 300 pounds,
That's determined by the density of the foam. More air makes memory foam feel softer and compress more readily, while less air makes it firm and resilient. Density is labeled according to the weight of one cubic foot of material. Most people find that 4-pound memory foam is just right. Keep in mind that denser foam lasts longer but also traps more heat. If you prefer a firm yet cool surface, opt for gel memory foam in the 5 to 6-pound range.