C + 2ZnO → CO2 + 2zn How many grams of
carbon dioxide will be
produced if 135 grams
of ZnO is completely
reacted?

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

The characteristic 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 and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons