If you burn 13.5 grams of O2 how many grams of H2O will you make?

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

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?

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus