Need serious hep no JOKE so plz help me List the % by mass for each element:
First, add the total mass of 4 atoms of hydrogen, plus 2 atoms of carbon, plus 2 atoms of oxygen. Total mass = . To obtain percent by mass, divide the mass of each element by the mass of the total:

H=
C=
O=

What are the choices?

Answerit is not a renewable energy source;

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