What percentage of the molar mass of sodium acetate (NaC 2 H 3 O 2 ) is derived from sodium (Na) ? Record your answer to the nearest tenth of a percent .

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

Which of the following is true about the speed of light? it depends on the wavelength.

Wind and moving water provide energy. chemical mechanical thermal none of the above