Question

what is the molar mass of the ionic compound na2s?
na2s = ? $\frac{g}{mol}$

Explanation:

Step1: Identify molar - mass of Na and S

The molar mass of Na is 22.99 g/mol and of S is 32.07 g/mol.

Step2: Calculate molar - mass of Na2S

In Na2S, there are 2 Na atoms and 1 S atom. The molar mass of Na2S is \(2\times22.99 + 32.07\).
\[2\times22.99+32.07=45.98 + 32.07=78.05\]

Answer:

78.05