The chemical equation of photosynthesis includes 6o2. what does the small number after the o represent? the total atomic weight of the oxygen the number of oxygen molecules produced the number of oxygen atoms in each oxygen molecule the number of oxygen atoms needed to balance the equation

The answer is the number of oxygen atoms in each oxygen.  This is a common SI standard for writing empirical formula for chemical compounds and their reactions. In compounds, the superscript is used to indicate the number of atoms of an element in the compound. For example, in this case, one oxygen molecule has two oxygen atoms. Therefore 6 oxygen molecules have (6*2) 12 oxygen atoms. The number in front represents the number of molecules of the compound or element.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.

"it built up in the atmosphere"

i think thats it, idk, i tried looking for this exact q& a for grad. and idk if i got this question right or sorry if im wrong