Question

the mole can be used as a conversion from the atomic to the macroscopic scale. in order to do this molar mass is needed. calculate the molar mass of each chemical formula. type in the numerical response, such as 32.56. round the molar mass of each chemical to two decimal places. cocl₂

Explanation:

Step1: Identify atomic masses

The atomic mass of Co (cobalt) is approximately 58.93 g/mol, and the atomic mass of Cl (chlorine) is approximately 35.45 g/mol.

Step2: Calculate molar mass of \( CoCl_2 \)

For \( CoCl_2 \), we have 1 Co atom and 2 Cl atoms. So the molar mass is calculated as:
Molar mass = (Atomic mass of Co) + 2×(Atomic mass of Cl)
Molar mass = \( 58.93 + 2\times35.45 \)
First, calculate \( 2\times35.45 = 70.9 \)
Then, add to the atomic mass of Co: \( 58.93 + 70.9 = 129.83 \)

Answer:

129.83