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,
Polyurethane, the most common type of spray foam insulation, was developed and used by the military in the 1940s and applied to airplanes. It wasn't until the 1970s that it started to be used as foam insulation.Various systems are used to apply the spray foam. The two component high pressure system is generally used in new home construction. It is a quick expanding type of spray foam.-value is the term given to thermal resistance to heat flow. The higher the R-value of an insulation product, the more effective the insulation properties. 1.8-2 pound polyurethane foam has the highest R-value of readily available insulation used in homes and buildings.