sulfur with iron mixed up, and iron (II) sulfide...
it states that matter is not created nor destroyed, the mass of combination before and after heating (sulfur with iron) should have been the same. What could have caused the % difference?
2007-10-28 15:27:19 · 4 answers · asked by Juan C 6 in Science & Mathematics ➔ Physics
i believe that they no longer call it the law conservation of mass.
it is now known as the conservation of mass AND energy.
therefore the sulfer with iron had a chemical reaction and some of the mass turned into energy or into another substance that diffused into the air.
in either case, the total mass and total energy are CONSERVED.
2007-10-28 15:40:50 · answer #1 · answered by bob b 3 · 0⤊ 0⤋
After the reaction, some of the matter will have vaporized. It still has mass, but now it's blowing in the wind and is a bit hard to measure.
If you were to perform this same experiment in a completely sealed container, it would weigh the same, since all the matter would remain in the system.
2007-10-28 22:41:45 · answer #2 · answered by rohak1212 7 · 0⤊ 0⤋
It could of been given off to the air in the form of combustion. According to e=mc^2 some of the mass could of been converted to energy. This usually a small amount.
2007-10-28 22:34:51 · answer #3 · answered by eric l 6 · 0⤊ 0⤋
Just the exchange into gas the % should be the same ? But a some loss on the heat exchange .
2007-10-28 23:06:47 · answer #4 · answered by Anonymous · 0⤊ 0⤋