Help this assignment please.
1. A man was accidentally stung by a bee. He was told to apply calamine at the point of sting on his neck. What was the importance of calamine. Write the equation for the reaction between bee sting and calamine.
2. Natasha was washing her school uniform using a bar soap. After she was through with the washing, she saw a brown layer on the lining of the basin. Using a suitable chemical equation, explain why there was formation of brown layer.