The combustion of a sample butane, c4h10 (lighter fluid) produced 2.46 grams of water. how many moles of water formed

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

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?