PLEASEEE HELP ?!?!?! which of the following processes provide evidence of the particulate nature of matter
I. Diffusion
II. Filtration
III. Osmosis

A. I and II only
B. I and III only
C. II and III only
D. I, II and III

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]