Answer:
D. oxygen atoms have twice as many protons as chlorine atoms
The coefficient in a chemical formula represents the amount of each chemical present. The amount of a substance is measured in moles.
<span><span>V. C. Wynne-Edwards and Konrad Lorenz were
the first authors to raise the concept of
altruism</span><span>. This was later
reiterated by </span>David Sloan Wilson, E. O. Wilson and Elliott Sober<span> in 1994 whose works referred to social organisms such as ants</span></span>.
B burning a piece of wood
Ash is a chemical substance not apparent before the chemical change,the fire burning the wood