Chapter 7 - Section 7.2 - Molar Mass and Calculations - Questions and Problems - Page 220: 7.9a

The molar mass for $KC_4H_5O_6$ is equal to 188.18 g.

1. Identify the molar mass for each element in this compound: $K: 39.10$ g $C: 12.01$ g $H: 1.01$ g $O: 16.00$ g 2. Multiply each one of them by their respective subscript number: $K: 39.10$ g $C: 12.01$ g * 4 = 48.04 g $H: 1.008$ g * 5 = 5.040 g $O: 16.00$ g *6 = 96.00 g 3. Calculate the total sum of these values: $(39.10 + 48.04 + 5.040 + 96.00)g = 188.18$ g