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e. In chemistry, pH ( / piːˈeɪtʃ / pee-AYCH ), also referred to as acidity or basicity, historically denotes " potential of hydrogen " (or "power of hydrogen"). [ 1] It is a logarithmic scale used to specify the acidity or basicity of aqueous solutions.
Purified water. Purified water is water that has been mechanically filtered or processed to remove impurities and make it suitable for use. Distilled water was, formerly, the most common form of purified water, but, in recent years, water is more frequently purified by other processes including capacitive deionization, reverse osmosis, carbon ...
Monocalcium phosphate is an inorganic compound with the chemical formula Ca (H 2 PO 4) 2 ("AMCP" or "CMP-A" for anhydrous monocalcium phosphate). It is commonly found as the monohydrate ("MCP" or "MCP-M"), Ca (H 2 PO 4) 2 ·H 2 O. Both salts are colourless solids. They are used mainly as superphosphate fertilizers and are also popular leavening ...
Philippine Airlines ( PAL) is the flag carrier of the Philippines. [ 11] Headquartered at the PNB Financial Center in Pasay, the airline was founded in 1941 and is the oldest operating commercial airline in Asia. [ 12][ 13][ 14][ note 2] The airline's main flight operations are located at Ninoy Aquino International Airport in Metro Manila.
Thousands of patients who were treated at two hospitals in Portland, Oregon, are being told to get bloods tests because of an "infection control breach" linked to an anesthesiologist that may have ...
Air Putih is a state constituency in Penang, Malaysia, that has been represented in the Penang State Legislative Assembly since 2004. It covers the northern part of Air Itam, a suburb of George Town that is located in the central part of Penang Island . The state constituency was first contested in 2004 and is mandated to return a single ...
Ocean acidification is the ongoing decrease in the pH of the Earth's ocean. Between 1950 and 2020, the average pH of the ocean surface fell from approximately 8.15 to 8.05. [ 2] Carbon dioxide emissions from human activities are the primary cause of ocean acidification, with atmospheric carbon dioxide (CO 2) levels exceeding 410 ppm (in 2020).
Air pressure actually decreases exponentially with altitude, dropping by half every 5.6 km (18,000 ft) or by a factor of 1/e (0.368) every 7.64 km (25,100 ft), (this is called the scale height) -- for altitudes out to around 70 km (43 mi; 230,000 ft). However, the atmosphere is more accurately modeled with a customized equation for each layer ...