2006-11-25 10:50:05 · 3 answers · asked by i<3 X-mas 2 in Science & Mathematics ➔ Chemistry
conservation of mass :- it states that mass can neither be created nor destroyed ina chemical reaction.
constant proportions :- In a pure chemical compound chemicals are always present in a definite proportions by mass
2006-11-25 15:46:17 · answer #1 · answered by sahana 2 · 0⤊ 0⤋
Law Of Conservation Of Proportions
2016-12-16 13:19:24 · answer #2 · answered by Anonymous · 0⤊ 0⤋
LaVoisier stated that mass is conserved in a chemical reaction. What he meant is the total mass of all the reactants will always equal the total mass of all the products.
Proust stated the law of constant proportions. He said that the same compound - no matter where the sample is taken - will always be composed of the same elements in the same proportions by mass. For instance water, H2O, is always 11% hydrogen and 89% oxygen by mass - no matter where in the world the sample is taken.
2006-11-25 11:10:23 · answer #3 · answered by physandchemteach 7 · 0⤊ 0⤋