Question

Calculate the mass of sodium sulphate required to prepare its 20% (mass per cent) solution in 100g of water.

What would you observe when

Read the given passage and answer the questions that follow based on the passage and related studied concepts. Rishika and Aditi were exploring different processes for separating different components from a mixture. They were given the mixture of iron filings and sulphur powder. Rishika heated the mixture strongly and she observed that a new substance was formed. Aditi did not do anything with the Iron filings and the sulphur powder that was given to her.