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Q: A vitamins expiration date has passed It was supposed to contain 500 mg of Calcium but it has lost 325 mg of Calcium How many mg of Calcium is left?
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If a vitamins expiration date has passed It was supposed to contain 500 mg of Calcium but it has lost 325 mg of Calcium How many mg of Calcium is left?

A vitamin's expiration date has passed. It was suppose to contain 500 mg of Calcium, but it has lost 325 mg of Calcium. How many mg of Calcium is left? Is this a trick question? Calcium is not a vitamin, but an element. Calcium, being an element, can't be 'lost', since, according to the laws of conservation, matter cannot be created nor destroyed (except in nuclear reactions). Nor can calcium be converted to something else, merely reacted with to form some other calcium compound, thus is still there. Radioactive isotopes of Calcium could decay over long periods, so it also depends on how long the expiry date has passed, and what isotopes are involved. If you somehow meant to type vitamin C instead of Calcium, then the matter is simple arithmetic and doesn't need to be answered on this forum, I would think.


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If a vitamins expiration date has passed It was supposed to contain 500 mg of Calcium but it has lost 325 mg of Calcium How many mg of Calcium is left?

A vitamin's expiration date has passed. It was suppose to contain 500 mg of Calcium, but it has lost 325 mg of Calcium. How many mg of Calcium is left? Is this a trick question? Calcium is not a vitamin, but an element. Calcium, being an element, can't be 'lost', since, according to the laws of conservation, matter cannot be created nor destroyed (except in nuclear reactions). Nor can calcium be converted to something else, merely reacted with to form some other calcium compound, thus is still there. Radioactive isotopes of Calcium could decay over long periods, so it also depends on how long the expiry date has passed, and what isotopes are involved. If you somehow meant to type vitamin C instead of Calcium, then the matter is simple arithmetic and doesn't need to be answered on this forum, I would think.


Which foods contain what?

Most fruits and vegetables contain little to no fat. They are also high in fiber, carbohydrates, vitamins, minerals, and provitamins. Some also contain antioxidants. Meats can provide amino acids, protein, calcium, iron, vitamins, and enzymes. Poultry contains protein, calcium, potassium, and carbohydrates. Rice and rice noodles contain protein and some (but not all) amino acids. Pasta contains mainly carbohydrates, a small amount of protein, vitamins, and minerals. Breads contain carbohydrates, a small amount of fiber, protein, minerals, and vitamins. Dairy products contain calcium, fats, carbohydrates, and protein.


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What is an inorganic substance that serves as a building material or takes part in chemical reactions in the body?

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