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20 June, 10:25

Which describes John Dalton's observations of elements in any given compound?

Their masses are always equal.

Each element always contributes the same number of atoms.

Atoms of different elements always combine in the same way.

Their volumes are always equal.

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  1. 20 June, 14:10
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    The answer is the third one. John Dalton watched that when components join in an exacerbate, the proportion of their masses will dependably be the same. Dalton was an English scientist. John Dalton assembled confirm for the presence of molecules by measuring the masses of components that come to shape mixes.
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