Question

The mass of 1 atom of carbon is equal to:​

Answer 1

Atomic mass, the quantity of matter contained in an atom of an element. It is expressed as a multiple of one-twelfth the mass of the carbon-12 atom, 1.992646547 × 10−23 gram, which is assigned an atomic mass of 12 units. In this scale 1 atomic mass unit (amu) corresponds to 1.660539040 × 10−24 gram.

Answer 2

know that relative atomic mass of 12CX12X2212C is 12 u12 u.

Therefore mass of 1 mol C=12 g1 mol C=12 g

mass of 6.022⋅1023 C atomsmass of 1 C atom=12 g=12 g6.022⋅1023=1.99⋅10−23 g,

mass of 6.022⋅1023 C atoms=12 gmass of 1 C atom=12 g6.022⋅1023=1.99⋅10−23 g,

but

1 u⟹Mass of 1 12C atom=1.66⋅10−24 g=1.66⋅12⋅10−24 g=19.92⋅10−24 g=1.992⋅10−23 g