A pure substance is one that a. Has been filtered
b. is an element or compound
c. If found in nature
d. Has been cleaned

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

The identities of substances are the same before and after which type of change