6.94)
the combustion of what volume of ethane (c2h6),
measured at 23.0°c and 752 mmhg, would be re-
quired to heat 855 g of water from 25.0°c to 98.0°c?

It was necessary to redeem the world and he knew that his son was the only way

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.