What is the mole fraction NaBr in an aqueous solution that contains 20. 1% NaBr (WEIGHT/WEIGHT %)?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms

The velocity of any object depends upon a) the location of the object. b) the location of the observer. c) which measurement tools are used. d) the relative motion of the observer.