Question

what is the molar mass of ca(oh)₂? 58.10 g/mol 74.10 g/mol 114.18 g/mol 73.09 g/mol

Explanation:

Step1: Find atomic masses

Ca: $40.08$ g/mol, O: $16.00$ g/mol, H: $1.01$ g/mol.

Step2: Calculate for \( \text{Ca(OH)}_2 \)

1 Ca, 2 O, 2 H.
Molar mass = \( 40.08 + 2\times(16.00 + 1.01) \)
= \( 40.08 + 2\times17.01 \)
= \( 40.08 + 34.02 \)
= \( 74.10 \) g/mol.

Answer:

74.10 g/mol (corresponding to the purple option: 74.10 g/mol)