Although aldosterone retains Sodium and water, it induces excretion of Potassium. Potassium can be induced by angiotensin II. Antidiuretic Hormone (ADH) ADH is a polypeptide, which is secreted by the hypothalamus, and it is stored in the posterior pituitary gland. ADH is released when water level is low in the blood stream. ADH regulates the body water level by concentrating urine and thereby reducing urine volume.
Gas masks are essential in an evacuation of a biological or chemical disaster. Knowing how to use it properly will increase your chance for survival. There are different types of gas masks, and you should follow the specific instructions for that particular mask.
In chemistry, compressed helium is used as a carrier gas for an instrument called a Gas Chromatograph. Its role is propel other molecules through a long tube where they gradually separate and then are detected at the end. It is used because it is so inert and won't interfere with the molecules you're trying to detect. Compressed helium is also used to produce an extremely cold environment. Scientists can almost reach absolute zero with compressed helium. davenpoc Â· 7 years ago.