12, if the decimal is over five, round up. If it's not, round down. Not sure what you mean by significant figures.
Explanation:
fossil fuels produce oil which is a chemical energy source. oil can be a by product of petrol which means when burnt can produce heat
Answer:
a. Solid
Explanation:
<em>Solid substances do not change size or shape according to their containers</em>. In other words, solid substances keep their size and shape.
<em>Liquid and gas substances take the shape of their container</em>, so any of them would be square-shaped when put in a square box, and they would be spherical shaped when put in a spherical container.
Answer:
Repulsion Forces create the bent triatomic shape of a water molecule.