how many gram atoms of cabon and oxygen are contained in 224liter of carbon dioxide at Normal temperature and pressure
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One mole is the number of carbon atoms in exactly 12 g of carbon (6.02 × 1023). mole) of hydrogen gas (H2) occupies. At a temperature of 20 °C and a pressure of 1 atmosphere, we find that it occupies 24,000 cm3 or 24 dm3 (1 dm3 is the same as a litre).
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A mole is 6.022 times 10 to the 23rd power. There are two atoms of oxygen in every carbon dioxide molecule, and there are 3 moles of carbon dioxide; therefore there are 3.6132 times 10 to the 24th power atoms of oxygen in 3 moles of pure carbon dioxide.
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