im pretty sute the answer would be number 4.
mark brainliest :)
In the context of chemistry, yes. Energy input is always equal to the energy output.
Since each Chlorine molecule is -1 and wants to gain an electron, 2 Chlorine atoms like to come together to form Cl2 by sharing 2 electrons each to form a single bond between the 2 atoms. Since both Chlornine has the same electronegativity, the bond is non-polar covalent since there electrons are evenly shared.
It has more density when it sinks because the water pushes away thats why people float they are less dense
It cools down i am 100 percent sure it cools down
