A substance freezes at 25 degree celcius and boils at450 degree celcius at what temperature will the subsancehave a definate shape and a defnate volume

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?