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).
show more Standard temperature and pressure (STP) are considered to be 298 K and 1.0 atm. Predict which of the following changes will cause the volume of the balloon to increase or decrease assuming that the temperature and the gas filling the balloon remain unchanged.balloon filled with helium at STP is submerged nder water where the pressure is 1.25 atm. --balloon filled with helim at STP floats into the atmosphere where the pressure is 0.5 atm. --balloon filled with helium at STP floats into air where the pressure equals 1 atm.