Which statement best explains why most atomic masses on the periodic table are decimal numbers?
(1) atomic masses are determined relative to an h–1 standard.
(2) atomic masses are determined relative to an o–16 standard.
(3) atomic masses are a weighted average of the naturally occurring isotopes.
(4) atomic masses are an estimated average of the artificially produced isotopes.

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

What is the number of atoms in 3.54 mol s

24 points and brainliest to anyone who can answer under 10 minutes with best ! the table below shows the role of different substances during photosynthesis. substance role during photosynthesis glucose stores chemical energy water combines with glucose to form carbon dioxide chlorophyll traps sunlight which of the following statements would correct one of the roles listed in the table? glucose combines with carbon to form water. chlorophyll reacts with light to produce carbon dioxide. water combines with carbon dioxide during photosynthesis. chlorophyll stores chemical energy needed for photosynthesis.