Calculate the mass of iron which will be converted into its oxide (Fe3O4) by the action of 20 grams of steam on it.
3Fe + 4H2O + Fe3O4 + 4H2

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

All forces cause motion? true or false

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?