According to the lewis definition, a base is a(n): a. proton donor. b. hydroxide ion donor. c. hydrogen ion donor. d. electron pair donor. e. electron pair acceptor.

Which term best describes the form sound takes as it travels away from a drum (a- gas)(b-music) ( c-waves) (d-particles

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Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.