How many grams of oxygen are required to react with 15.0 grams of octane in the combustion of octane in gasoline?

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle