After measuring the mass of a slice of a potato a student used a hairdryer to remove all the moisture from the slice then the student measured the dry mass of the same slice of potato the student determine the path that the potato or 40% water how could the student Replicate this experiment

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo