Which substances are bases? check all that apply. 1. naoh 2. koh 3. h3bo3 4. nacl 5.ca(oh)2 6. fe2o3

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j