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67.2 L of Carbon dioxide gas is filled in a cylinder at STP. a. Calculate the mass of CO2 present in it. (Atomic mass- C = 12, O = 16) b. Calculate the number of molecules present in the cylinder. |
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Answer» a. Molecular mass of CO2 =12 × 1+16 × 2 = 12 + 32 = 44 No. of moles in 67.2L CO2 at STP = \(\frac{67.2L}{22.4L}\) = 3 b. 3 × 6.022 × 1023 |
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