Calculate the number of atoms in each of the following samples: 19. 0.357 mole sample of potassium 20. 2.93 moles sample of ca 21. 473 moles of copper 22. an 85.5-g sample of hg in a barometer 23. a 0.251-g ti metal heart valve 24. a 1.00-g sample of kr gas

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.