Question

Find the mass of the following:

1. An atom of carbon

2. A molecule of benzene

Answer 1

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$\bold{\underline{Question-}}$

Find the mass of the following:

1. An atom of carbon

2. A molecule of benzene



$\bold{\underline{Answer-}}$




1. we know that Atomic mass of carbon atom

= 12.011 u


so,

•°• Carbon molar mass = 12.011 gram mole ^-1


Carbon atom in a mole of carbon = 6.022*10^23 mole^-1



•°• The mass of an atom of carbon



= 12.011gram mole^-1 / 6.022*10^23 mole^-1



= 1.99*10^23 gram






2. Molecular mass of benzene mole
= 78.06 u



•°• Benzene molar mass = 78.06 gram mole^1



Hence the mass of one molecule of benzene = Benzene molar mass / Number of passengers



= 78.06 gram mole^1 / 6.022 * 10^23 mole^1



= 12.96*10^-23 gram






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Answer 2

hope it helps!

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