Iron (2) chloride reacts with sodium oxide to

Hope this is what you're looking for, don't forget to balance the equation too, the answer is balanced.

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water

Idon't know hope someone you