a farmer is using a crop duster to spray chemicals on his crops to kill insects. the chemicals the farmer uses seeps into the soil and drains into the nearby river. how does this effect the animals that live in the river?
a) they swim away.
b) they change color.
c) they get sick or die.
d) the chemicals give them more energy.

Olá. porque a reação na temperatura é muito rapida a do copo : )

Answer///an early form of the atomic theory; dalton atomic theory;

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.

Iron reacts with oxygen in a chemical hand-warmer. how should this reaction be categorized? the correct answer is: a). as an exothermic process because it releases heat