auviannadority13
19.01.2021 •
Chemistry
An unknown element forms a yellow ion, XO 4 ^ 2- . It forms a precipitate with silver ions. If 48.0 of a 0.250 mol Lof silver ions is added to a solution of the unknown ion, 1.856 g of a red-brown precipitate are formed. Determine the identity of metal X
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Ответ:
The two theories were:
1.Geocentric theory stating that earth is the centre of the universe and sun revolves around it.
2.Heliocentric theory stating that the earth revolves around the sun.