| Author | Chemistry |
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i dod not get one of the questions, if somebody can help me it would be great :)
You have a chemical sealed in a glass container filled with air. The glass container has a mass of 200.0 grams and the chemical has a mass of 300 grams. The total mass of the setup is 500 grams. The chemical is ignited by means of a magnifying glass focusing sunlight onto the reactant. After the chemical has completely burned, what is the total mass of the setup? |
| still 500 grams |
| yes, it's right thnx! :D but can u explain why? |
Mass =/= weight. Mass stays the same no matter what form of matter, be it solid, liquid or gas.
Unless the gas of the burned up chemical somehow leaks out of the container, the total mass is still 500g. |
better reason is-
Mass can neither be created nor destroyed according to "Law of conservation of mass" given by experiments done under John Dalton.
since the glass container was sealed, mass of products remained same as the mass of reactants tht includes the gases liberated aswell.
if the container was not sealed then the formed gas wud escape out n bring a difference in the total mass but it didnt so answer is 500. |
| ok thank you everyone :) |
| closed by Lord Ghost_Face (2010-10-07 04:31:58) |
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