Question

calculate the formula unit mass Na2CO3​

Answer 1

Answer:

2Na + 1C + 3O = 2 × 23 + 1 × 12 + 3 × 16 = 46 + 12 + 48 = 106 u.

Explanation:

calculate the formula unit mass Na2CO3

Answer 2

Answer:

The formula unit mass of $Na_{2} CO_{3}$ is 106 u.

Explanation:

Atomic mass of Na = 23 amu

Atomic mass of C = 12 amu

Atomic mass of O = 16 amu

$Na_{2} CO_{3}$ contains 2 Na, 1 C, and 3 O atoms.

The formula unit mass of a substance is the sum of the atomic masses of all atoms in an ionic compound.

Hence formula unit mass of $Na_{2} CO_{3}$ = (2 * 23) + (1 * 12) + (3 * 16)

                                                             = 46 + 12 + 48 = 106 u