Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone, which contains both of those minerals) and is the main component of pearls and the shells of marine organisms, snails, and eggs.
An ordinary breath for a 70-kg adult is about 500ml of air. We call this the tidal volume. Since oxygen is 21% by volume of air, then the volume of oxygen inhaled is about 105ml. The density of pure oxygen at sea level is 1.43kg per cubic metre.
1. Record the average breaths per minute for the Rbreather.n breaths/min x 0.5 liters of air = liters/min This value represents the amount of air consumed in one minute and is referred to as the respiratory minute volume. 2.. Calculate the amount of air needed for one person to breathe each day. liters/hr x hrs/day = liters/day 4. Calculate the amount of air needed for one person to breathe for one year. Work this one on your own. liters/yr 5.