Vitamin B12 could trigger outbreaks of acne, scientists have today warned. The essential nutrient, found in meat, fish, eggs and dairy products, as well as in Marmite, alters the activity skin bacteria. This leads to unsightly spots and pimples in susceptible people, a new study found.
Sulfur dioxide, SO2, is a colorless gas or liquid with a strong, choking odor. It is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores (aluminum, copper, zinc, lead, and iron) that contain sulfur. Sulfur dioxide dissolves easily in water to form sulfuric acid. Sulfuric acid is a major component of acid rain. Acid rain can damage forests and crops, change the acidity of soils, and make lakes and streams acidic and unsuitable for fish.
Â© OCR 2014 Turn over 2 Coal fired power stations produce the pollutant gas sulfur dioxide, SO 2. This gas is toxic and produces âacid rainâ. (a) The sulfur dioxide reacts with water and oxygen in the atmosphere to produce sulfuric acid, H 2 SO 4.n some coals, the sulfur content can be up to 10% by mass. Calculate the mass of sulfur dioxide produced when 1.0 kg of coal is burnt. Assume the sulfur content to be 10% by mass. mass of SO 2 = ......................................................