97.5g NaCl will be produced with 80.0g of O2
I believe it is element As, for arsenic.
Changes in phase from solid to liquid (melting) and from liquid to gas (boiling) require energy. When solid ice melts and becomes a liquid, the particles of the substance move farther apart and heat energy is gained. When water boils, if forms steam (a gas).
Maturity, firmness, texture, and color of lean and the amount and distribution of marbling and degree of maturity