Question

the chemical formula for calcium hydroxide is: ca(oh)₂
calculate the molar mass of calcium hydroxide.
round your answer to 2 decimal places.
□ g·mol⁻¹

Explanation:

Step1: Identify atomic masses

The atomic mass of Ca is $40.08\ \text{g/mol}$, O is $16.00\ \text{g/mol}$, and H is $1.01\ \text{g/mol}$.

Step2: Calculate for each atom

In $\text{Ca(OH)}_2$, there is 1 Ca, 2 O, and 2 H.
Mass of Ca: $1\times40.08 = 40.08\ \text{g/mol}$
Mass of O: $2\times16.00 = 32.00\ \text{g/mol}$
Mass of H: $2\times1.01 = 2.02\ \text{g/mol}$

Step3: Sum the masses

Molar mass = $40.08 + 32.00 + 2.02 = 74.10\ \text{g/mol}$

Answer:

74.10