What is the use of the element calcium?
Calcium, oxygen, magnesium, and potassium are just some of the nutrients the human body needs from the diet. No doubt you or someone you know have heard that yogurt/dairy are good calcium sources, bananas for potassium, etc. Cobalt, copper, and chromium: here’s info from Wikipedia: -COBALT: Applications -Alloys, such as -Superalloys, for parts in gas turbine aircraft engines. -Corrosion- and wear-resistant alloys. -High speed steels. -Cemented carbides (also called hard metals) and diamond tools. -Magnets and magnetic recording media. -Alnico magnets. -Samarium-cobalt magnets. -Catalysts for the petroleum and chemical industries, e.g. for hydroformylation and oxidation. -Electroplating because of its appearance, hardness, and resistance to oxidation. -Drying agents for paints, varnishes, and inks. -Ground coats for porcelain enamels. -Pigments (cobalt blue and cobalt green). -Lithium ion battery electrodes. -Steel-belted radial tires. -Purification of histidine-tagged fusion proteins i
