1kg of sodium per oxide will produce what quantity of oxygen in stp

The ph of carrots are 5.0 how it is classified a.acidic b.basic c.indicator d.neutral

2. how is heavy water different from normal water

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.