Water is unique because the density of its solid, ice, is less than the density of its liquid. how would life be is this is different

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes no correct anwser get brainliest

What would happen if no were added to n(g)+o2=2no(g) at equilibrium?