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what is the mass of 0.2 mole atom of carbon?

The molar mass of carbon is 12 g. Thus

1 mole of carbon = 12 g

Therefore 0.2 moles of carbon = 0.2 X 12 = 2.4 g. 

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Answer is 2.4g

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(molar mass of carbon is 12 u (or) 12 amu (or) 12g)

mass=no. of moles*molar mass

mass=(0.5*12)g

mass=2.4g

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