What is the mass of 1.84 mol NaCl? Give your answer to the correct number of significant figures. (Molar mass of NaCl = 58.44 g/mol)
To calculate the mass, we use
mass = moles molecular mass
mass = 1.84 58.44
mass = 107.5296
We will take three significant figures
108 g
Answer: 107.5296 g of NaCl is the mass of 1.84 moles of NaCl.
Explanation:
Given mass of the NaCl = ?
Moles of NaCl = 1.84 moles
Molecular mass of NaCl = 58.44 g/mol
\(\text{Number of Moles of compound}=\frac{\text{Given mass of the compound}}{\text{molecular mass of compound}}\)
\(1.84 mol=\frac{Given mass of the NaCl }{58.44 g/mol}\)
Given mass of the NaCl :
\(1.84 mol\times 58.44 g/mol=107.5296 g\)
107.5296 g of NaCl is the mass of 1.84 moles of NaCl.