SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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44
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32
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16
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56
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Detailed explanation-1: -The atomic number of Oxygen is 8 and its atomic mass is 15.999u. So, CO2 contains 1 carbon molecule and 2 oxygen molecules. Hence, the relative molecular mass of CO2 is 44u.
Detailed explanation-2: -The molecular mass of carbon dioxide is 44.01amu. The molar mass of any compound is the mass in grams of one mole of that compound. One mole of carbon dioxide molecules has a mass of 44.01g, while one mole of sodium sulfide formula units has a mass of 78.04g. The molar masses are 44.01g/mol and 78.04g/mol respectively.
Detailed explanation-3: -The relative molecular mass of carbon dioxide is 44. This means that one mole of carbon dioxide molecules has a mass of 44 g.
Detailed explanation-4: -The atomic weight of a carbon atom is 12 and the atomic weight of oxygen is 16, so the total atomic weight of CO2 is 44 (12 + (16 * 2) = 44). This means that a quantity of CO2 can be expressed in terms of the amount of carbon it contains by multiplying the amount of CO2 by 0.27 (12/44).
Detailed explanation-5: -Therefore, the volume of 44 g of CO 2 at S . T . P is 22 . 4 litres .