Answer:
Test for sulphate ion present in a given salt: Add barium chloride solution. If white precipitate is formed, presence of SO42- ion is confirmed.
Explanation:
<em>The Molecular Mass for Phosphorus is 31 grames / mole.
So, 31g. P.....................1 mole
2.3g. P ..........................x mole
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178 of each species
178 protons
178 neutrons
And 178 electrons
In Thomson's experiment, he showed that an electrical current can be made to flow from a positive site to a negative site.