Ineed on the question in the photo

The ironwood will because it it more heavy and the others are not
The higher the amount is the more possible it is to sink
Hope this helped

I think the ironwood, wood would sink when placed in a fluid with a density of 11.4 g/cm

One splits the atoms and molecules  the other combines them

Supply is the markets term for selling a specific quantity of products at various prices. the law of supply and demand is the one which affect the pricing and also the quantity the market is able to produce or make available.