Answer:
plastic and petroleum jelly
A hypothesis is a working explanation, where a theory is a well established explanation. So really hypothesis is a more of a "guess and check" "work in progress" and a theory is like a summary of overall explanation of the observed behavior. hope this helps
Answer:
Since human wants are unlimited, and resources used to satisfy those wants are limited - there is scarcity. Even in the US, one of the richest countries in the world, there is scarcity -- if we use our new definition of SCARCITY.
hope it helps
To convert grams to moles you must divide by the molar mass of the compound
CaCl molar mass=75.528
220/75.528=2.912 moles
Because molecular bonds are not as strong as ionic bonds, they require less energy (heat) to break apart. This translate to less heat being required to move from one state to the next (melting, boiling, freezing, condensing) and thus a lower melting and boiling point.
