During which step in the can crush lab did the air pressure outside the can become greater than the pressure inside the can? . a. the can was filled nearly to the top with water.. b. the can was placed on the hot stove burner for several minutes.. c. the can was removed from the hot oven burner.. d. the can was placed upside-down in the water-filled pan.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.