Kidneys are a filter system. The main job of the kidneys is to remove waste from the blood and return the cleaned blood back to the body. Each minute about one litre of blood ï­ one-fifth of all the blood pumped by the heart - enters the kidneys through the renal arteries.
The volume of helium in the balloon has been estimated as being able to lift a total load, including the balloon material and the structure beneath it, of 65 pounds (29 kg) at sea level and 48 pounds (22 kg) at 8,000 feet (2,400 m).
How to Inflate a Balloon Using Baking Soda and Vinegar Objective What is the project about? Students learn about gas and chemical reactions by discovering how to inflate a balloon using baking soda and vinegar. What are the goals? The goal of the project is to demonstrate the power of gas procuded when of baking soda and vinegar are mixed. The goal is for the balloon to be blown up by the gas created. Materials and Equipment / Ingredients What materials are required? Balloon (1 per student)