When a cube of ice melts, how can you confirm that the mass has been conserved? A) Calculating the heat required to melt the ice

B) Adding a catalyst to the reaction

C) Observing how much of the ice is required in order to reach a certain volume of water

D) Measuring the mass of the ice cube, then measuring the mass of the now melted water

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance

You can melt ice by applying pressure because the solid/liquid line has a slope.