A RCRA hazardous waste is a waste that either appears on one of three lists created by the U.S. Environmental Protection Agency, or, if not on the lists, exhibits one of four characteristics of hazardous waste.
How often should oxygen nasal cannulas be changed? Update: Our supplier recommended we change the cannulas monthly and the tubing every 60-90 days. My father has friends who's suppliers have had different guidelines.
For example, in the following equation you cannot change oxygen's subscript in water from one to two, as in: H 2 + O 2 2 O 2. True, this balances the equation, but you have changed the substances in it. H 2 O 2 is a completely different substance from H 2 O. 2.. If there is an element that is not bonded to any other atom or is diatomic (H2, N2, O2, F2, Cl2, Br2, I2) balance it last. For example, in the equation: CO 2 + H 2 6 H 12 O 6 + O 2, oxygen is diatomic(O 2). When balancing this equation, balance oxygen last.