2007-01-18 04:54:14 · 14 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
if its pure gold 5g, if there are any contaminants in it they may burn out and slightly reduce the mass that is left
2007-01-18 05:04:44 · answer #1 · answered by Maximus P 2 · 0⤊ 0⤋
I am sure that all of the answers you have been given are correct in the context of your current studies. You have been quoted the law of conservation of mass etc. etc. However, this is not absolutely true and you could get a few more marks by pointing this out! Albert Einstein was the first to point out that mass and energy are nonconvertible. Heat is a form of energy and if you heat something up, in this case your 5g of gold, then it does gain mass. Of course, the amount is so very very small and cannot be measured by the most accurate scales we have available. It is an example of a thought experiment but the physics and maths tell us that the outcome is that your gold would increase in mass!
2007-01-18 20:43:38 · answer #2 · answered by Anonymous · 0⤊ 1⤋
5 g
2007-01-18 11:05:55 · answer #3 · answered by rosie recipe 7 · 0⤊ 0⤋
5g is the mass. the mass of something does not change just because it has been melted. If you melted a chocloate it would still weigh the same as when it was a solid
2007-01-18 07:09:41 · answer #4 · answered by shilpa n 3 · 1⤊ 0⤋
5g. Conservation of mass always applies.
2007-01-18 05:01:36 · answer #5 · answered by Duluth06ChE 3 · 1⤊ 0⤋
It will still be 5 grams. Unless there are any impurities which may burn and lower the mass slightly.
2007-01-18 05:59:18 · answer #6 · answered by Elaine 2 · 0⤊ 0⤋
5 grams
2007-01-18 08:21:36 · answer #7 · answered by latif_1950 3 · 0⤊ 0⤋
5 gm
2007-01-18 05:02:56 · answer #8 · answered by Sam 4 · 0⤊ 0⤋
5 grams
The mass doesn't change if you melt it.
2007-01-18 05:00:41 · answer #9 · answered by footynutguy 4 · 2⤊ 0⤋
5g - it doesn't matter which phase of matter the gold is in.
2007-01-18 05:03:24 · answer #10 · answered by Batho 2 · 0⤊ 0⤋