Question

Calculate the formula unit mass of NaHCO3. (At. Mass of Na=23u, H=1u, C=12u, O=16u)

Answer 1

Formula unit mass of
`NaHCO_(3)` is 84 u.

Step-by-step explanation:

Formula unit mass can be calculated by the adding individual element mass in the formula of the compound.

The given compound -
`NaHCO_(3)`

From the given the atomic mass of each element in the given compound is as follows.

Atomic mass of sodium (Na) = 23 u

Atomic mass of Hydrogen (H) = 1 u

Atomic mass of carbon (c) = 12 u

Atomic mass of oxygen (O) = 16 u

The number of atoms in the formula:

1 sodium atom =23 u

1 hydrogen atom = 1 u

1 carbon atom = 12 u

3 oxygen atom = 3 X 16 u = 48 u

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Formula mass = 84 u

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Therefore, Formula unit mass of
`NaHCO_(3)` is 84 u.